Setting fixed decimal figures on data

I am generating a textfile from positions and want to add decimal figures (zeroes) to fit with the formating. All data should have four decimal places:

 

 

e.g. turn 84.54 m should be 84.5400 m

 

 

The rounder transformers only remove decimal figures, but doesn't work for adding zeroes. I do not want to add data, just zero decimals.

 

 

/Burbank