Three point$-$like charges are placed at the following points on the x$-$y system coordinates $($q is fixed at x $=-1\mathrm{.}00$ cm$,$

$42$ is fixed at y $=+2\mathrm{.}00$ cm$,$ and q is fixed at x $=+3\mathrm{.}00$ cm$.$ Find the magnitude of the electric force on the charge $91.$

Let q$1=-2\mathrm{.}20$ pC$,92=-2\mathrm{.}60$ C$,$ and q$3=+4\mathrm{.}70$ C$.$

answer in N