A mobile crane is lifting a large concrete block $W$ at a constuction site, as shown in the figure below. The crane

body has a weight of $W_1=9000lb$ and the crane boom has a weight of $W_2=1100lb,$ which act at the

centers of gravity $C{G}_1$ and $C{G}_2$ respectively. The center of gravity locations $(L_1$&$L_2),$ the distance between

the front and rear tires $(L_3),$ and the location of the lifting weight $(L_4)$ are given as follows: $L_1=30$ in$,$

$L_2=100in,L_3=130$ in$,$ and $L_4=125in.$

Note: Express your answers following the standard sign convention for the coordinate system shown.