Answer
$90,1\bar{0}0\ ft^3$
Work Step by Step
The volume of a pyramid is given by
$$
V=\frac{1}{3} Bh=\frac{1}{3} \times 109.4\times 83.2 \times 29.7= 90110.592\ ft^3\approx 90,1\bar{0}0\ ft^3
$$
where $B$ is the area of the base (parallelogram with area $A=bh$) and $h$ is the height of the pyramid.
