Shell Programming and Scripting

Hi everybody ,
I need someone to help me! I have a file with 4 colunms and I would like to transform only the 4th colunm by multiplying this by a constant value (i.e 0.3047). I'm a new one using/creating basic scripts and I'm using linux redhat.
The file has the following configuration (separeted by colunms):

115675.040000 9358616.700000 0.000000 4995,450195
115675.040000 9358616.700000 50.000000 4995,450195
115675.040000 9358616.700000 100.000000 5008,660156
................. .................. ............ ...............
................. .................. ............. ...............

Is it possible to create in unix/linux a script to make this operation?
PS: The file is too big to do it in the excel.

Bumping up posts or double posting is not permitted in these forums.

Please read the rules, which you agreed to when you registered, if you have not already done so.

You may receive an infraction for this. If so, don't worry, just try to follow the rules more carefully. The infraction will expire in the near future

Thank You.

The UNIX and Linux Forums.