Price per share $=86$

Rate $=10\%$

$86=\frac{D_0(1\mathrm{.}25)}{1\mathrm{.}1}+\frac{D_0(1\mathrm{.}25{)}^2}{(1\mathrm{.}1{)}^2}+\frac{D_0(1\mathrm{.}25{)}^3}{(1\mathrm{.}1{)}^3}+$dots

$\frac{D_0(1\mathrm{.}2\mathrm{.}5{)}^3(1\mathrm{.}15)}{(1\mathrm{.}1{)}^4}+\frac{D_0(1\mathrm{.}25{)}^3(1\mathrm{.}15)(1\mathrm{.}06)}{\frac{10-\mathrm{.}06}{(1\mathrm{.}1{)}^4}}$

Solve for Do$?$