An individual is lifting an object. The individual$$s upper body weight is $390$N and the lifted object$$s weight is $105$N$.$ The upper body moment arm from the L$5/$S$1$ disc is $0\mathrm{.}180$ m and the object moment arm from the L$5/$S$1$ disc is $0\mathrm{.}311.$ The sacral angle is $42$ and the erector spinae moment arm is $0\mathrm{.}062$ m$.$ What is the compressive reaction force due to the weight above the L$5/$S$1?$