Determine the total force acting on a $3\mathrm{.}6$ m high retaining wall per unit length of the wall.$$The soil that is backfilled level behind the wall is a granular soil with a total unit weight of $18\mathrm{.}2$kN$/$m$3$and a saturated unit weight of $19\mathrm{.}5$kN$/$m$3.$The active earth pressure coefficient for the soil is $0\mathrm{.}37.$The water table is expected to raise to a depth of $1\mathrm{.}1$ below the ground surface.$$A surcharge of $72$kPa is applied above the soil surface.$$Report your answer in terms of kN as a whole number.