To find the ZFM you must
add the DOM + Traffic load =48600.
This info can be found
from the left hand side of the load and trim sheet.
There is only one answer
with this value of ZFM.
Enter right side of loadsheet at the DOM index, 33.5, follow direction and
scale arrows for the individual compartment loads.
Finally in compartment Og draw a vertical line back up to
the index grid to read 57.0