$62.$ in the figure shown what are the a$)$ magnitude and b$)$ direction of the netelectrostatic force on particle $4$ due to the other three particles? all four particles are fixed in the xy plane q$1=-3\mathrm{.}2$ x $10^-19$ C$,$ q$2=+3\mathrm{.}2$ x $10^-19$C$,$ q$3=+6\mathrm{.}4$x$10^-19$C $,$ q$4=+3\mathrm{.}2$x$10^-19$C and $01=35$degrees and d$1=3$cm and d$2=$d$3=2$cm