Given the following demand data

$\backslash$table$[[$Year$,$Quarter,Demand$],[1,1,105],[,2,150],[,3,93],[,4,121],[2,1,140],[,2,170],[,3,105],[,4,150],[3,1,200],[,2,170],[,3,110],[,4,130]]$

What is the seasonally adjusted forecast for year $4,$ Q$1?$

$622$

$154$

$186\mathrm{.}5$

$136\mathrm{.}67$