Calculation of individual costs and WACC BlackRock, Inc. $($BLK$)$ has a capital structure that consists of common stock equity and debt. The market capitalization of its equity is $$74\mathrm{.}356$ billion and its debt has a market value of $$6\mathrm{.}028$ billion.

a$.$ Calculate the market value weights for BLK$\text{'}$s capital structure.

b$.$ Calculate BLK$\text{'}$s cost of equity using a beta of $1\mathrm{.}48,$ a risk$-$free rate of $0\mathrm{.}76\%,$ and a market risk premium of $5\mathrm{.}40\%.$

c$.$ Calculate BLK$\text{'}$s cost of debt using a bond price of $$1,071\mathrm{.}46,$ semi$-$annual coupon payment of $$31\mathrm{.}25,$ and $10$ years to maturity.

d$.$ Calculate BLK$\text{'}$s current WACC using a $21\%$ corporate tax rate.