A $45\mathrm{.}0g$ sample of aluminum, which has a specific heat capacity of $0\mathrm{.}897J^{-1}{g}^{-1}{C}^{-1},$ is dropped into an insulated container containing $100\mathrm{.}0g$ of water at $90\mathrm{.}0C$ and a constant pressure of $1$atm. The initial temperature of the aluminum is $9\mathrm{.}4C.$

Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has $3$ significant digits.