Let a_1, a_2, a_3, … be a G.P. of increasing positive numbers. If a_3 a_5=729 and a_2+a_4=111/4, then 24(a_1+a_2+a_3) is equal to

Let $\displaystyle a_1, a_2, a_3, \ldots$ be a G.P. of increasing positive numbers. If $\displaystyle a_3 a_5=729$ and $\displaystyle a_2+a_4=\frac{111}{4}$, then $\displaystyle 24\left(a_1+a_2+a_3\right)$ is equal to