A project with an initial cost of $$31,600$ is expected to provide cash flows of $$12,300,$ $$12,700,$ $$15,800,$ and $$10,300$ over the next four years, respectively. If the required return is $8\mathrm{.}6$ percent, what is the project's profitability index? $1\mathrm{.}2141\mathrm{.}3241\mathrm{.}4891\mathrm{.}103\mathrm{.}755$