Calculate WACC if long term bond rate is $4\mathrm{.}2\%,$ equity market risk premium $5\%,$ adjusted beta $1\mathrm{.}31,$ cost of equity $10\mathrm{.}7\%,$ tax rate $24\%,$ debt to equity ratio $4\mathrm{.}13$ and cost of debt $4\mathrm{.}5\%?$