You want to be able to buy a home theatre system for $$6225$ in $4$ years. Your money is earning $4\mathrm{.}84\%$ compounded monthly. What is the size of your monthly deposit?

$$142\mathrm{.}91$

$$118\mathrm{.}05$

$$117\mathrm{.}80$

$$117\mathrm{.}33$

$$142\mathrm{.}33$