Problem $14\mathrm{.}020-$ Coordinates of wall

Cruiser A was traveling east at $69m\frac{i}{h}$ on a police emergency call when it was hit at an intersection by car $B,$ which was traveling south at high speed. After sliding together on the wet pavement, the two cars hit cruiser $C,$ which was traveling north at $45m\frac{i}{h}$ and was $63$ ft from the intersection at the time of the first collision. Stuck together, the three cars hit a wall and came to a stop at $D.$ Knowing that car $B$ weighs $3600$ lb and that each of the cruisers weighs $3000$ lb $,$ solve the problem by neglecting the forces exerted on the cars by the wet pavement and treating the cars as point masses. Knowing that the speed of car $B$ was $80\mathrm{.}6m\frac{i}{h}$ and that the time elapsed from the first collision to the stop at $D$ was $1\mathrm{.}5$ s $,$ determine the coordinates of $D.$