Assume Bill Jones invested $$4,021\mathrm{.}81$ into an account exactly one year ago. The account has an interest rate of $4\mathrm{.}3\%$ p$.$a$.$ How much does Bill have in his account today $($that is$,$ exactly one year after the initial deposit$)?($Round your answer to the nearest cent and record your answer without a dollar sign and without commas. For example, record $$1,356\mathrm{.}8382$ as $1356\mathrm{.}84).$