Ryan, just take the modulo part and send it to another variable. Then display with as many digits as you like. Something like this:
myADCvariable_fraction = myADCvariable // 100000000
LCDOUT $FE, 1 DEC myADCvariable / 100000000, "." , myADCvariable_fraction / 10000
That should give you 4 decimal places.