b$)$ Two properties; $G$ and $H$ were recently sold for Ksh$.20$ Million and Kshs$.24$ Million respectively. Determine the value of a property in the same location with estimated PGI of Kshs$\mathrm{.}5\mathrm{.}4$ Million if $G$ and $H$ had PGI of Kshs$.5$ Million and Kshs$.4$ Million respectively.