extract text from variable length strings in text file

I have a variety of text files that contains a string that is not of a fixed length. It could be similar to any of the three following examples. The variable string length is where I'm stuck.

Some stuff here
( G54.1P1 = X-504.13 Y-215.137 Z-244. )
More stuff
Even more stuff

Some stuff here
( G54.1P1 = X-504.456 Y-215.137 Z-241.129 )
More stuff
Even more stuff

Some stuff here
( G54.1P1 = X-503. Y-215.28 Z-244. )
More stuff
Even more stuff


I'd like to use a button, probably using Application.GetOpenFilename(), to find the text file, and place the 1st numerical value in A1, 2nd in A2, and 3rd in A3.

The stuff is code for a CNC machine. Text, letters, numbers.


So far, I'm able to get some of the information using

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But the variable string length causes issues. I was thinking of pulling all the information into one cell and separating it later, but I figure there's probably a way to be more precise.

Here's a portion of a text file:

%
O1975( 402975.02.01 1ST.NCF )
( GIBBSCAM VERSION: 11.3.7 64 BIT )
( FORMAT: MATSUURA GTECH 30I MILL [RPM] C2239.26.9M.POST )
( MDD: NEW MATSUURA GTECH 30I 5 AXIS VERTICAL MILL - REDLINE PRO MAN - V11.3.MDD REV: 1 )
( 7/23/2019 AT 10:31 AM )
( OUTPUT IN ABSOLUTE MILLIMETERS )
( PARTS PROGRAMMED: 1 )
( FIRST TOOL NOT IN SPINDLE )
N1M800M1
G21
G0G17G40G43G49G52G80G90G98M9
G53Z0.M5
M1
G17G21G40G80
T1M6
T4
( OPERATION 1: ROUGHING )
( A0C0 STOCK )
( TOOL 1: 50.8 DIA. FACE ENDMILL )
( 2" KENNAMETAL FACE MILL )
( CS#2 - A0C0 )
( G54.1P1 = X-504.13 Y-215.137 Z-244. )
G54.1P1
S6000M3
G90G0X56.4Y-20.4
G65P8023A0.C0.
G43Z80.H1
M8
Z10.
G1Z.2F1500.
X-77.9
G0Y20.4
G1X56.4
G0Z10.
( OPERATION 2: ROUGHING )
( A0C0 STOCK )
( TOOL 1: 50.8 DIA. FACE ENDMILL )
( 2" KENNAMETAL FACE MILL )
( CS#2 - A0C0 )