Delta corporation obtained a $$45,000$ loan at a rate of prime $+1\mathrm{.}15\%$ on July $18.$ Fixed payments of $$3500$ are due on the $25$th of each month, beginning August $25.$ The prime rate was $3\mathrm{.}85\%$ on july $18$ and rose to $4\%$ on september $6.$ What is the outstanding loan balance immediately after the september $25$th payment?$($use $365$ days a year. Do not round immediate calculations. Round your final answer to $2$ decimal places.$)$