I need the formulas for both the Beginning Balance and Ending Balance, thank you.

\begin{tabular}{r|rrr} \multicolumn{1}{c}{ Beginning Balance } & \multicolumn{1}{c}{ Interest Earned } & \multicolumn{2}{l}{ Investment } \\ \hline 1 & 0.12% & $103.90 \\ 2 & 0.24% & $103.90 \\ 3 & 0.36% & $103.90 \\ 4 & 0.48% & $103.90 \\ 5 & 0.60% & $103.90 \\ 6 & 0.72% & $103.90 \\ 7 & 0.84% & $103.90 \\ 8 & 0.96% & $103.90 \\ 10 & 1.08% & $103.90 \\ 11 & 1.20% & $103.90 \\ \hline \end{tabular} \begin{tabular}{r|rrr} \multicolumn{1}{c}{ Beginning Balance } & \multicolumn{1}{c}{ Interest Earned } & \multicolumn{2}{l}{ Investment } \\ \hline 1 & 0.12% & $103.90 \\ 2 & 0.24% & $103.90 \\ 3 & 0.36% & $103.90 \\ 4 & 0.48% & $103.90 \\ 5 & 0.60% & $103.90 \\ 6 & 0.72% & $103.90 \\ 7 & 0.84% & $103.90 \\ 8 & 0.96% & $103.90 \\ 10 & 1.08% & $103.90 \\ 11 & 1.20% & $103.90 \\ \hline \end{tabular}