ZFM = 4120 lbs ZFM moment = 377751 in.lbs

Add fuel : 100 USG = 600lbs. moment = 56160 in.lbs

Ramp mass = 4720 lbs moment 433911 in.lbs

Minus 18 lbs taxi fuel: moment - 1684.8 in. lbs

T/O mass 4702 lbs moment 432226.2 in.lbs

To CG = 432226.2/4702 = 91.92in aft of the datum.