$5, 6, ?, 57, 244$

Find the wrong number in the given sequence:
$4, 2.5, 3.5, 6.5, 15.5, 41.25, 126.75$ (in $.5$)

Find the next term in the series: $3, 15, 39, 75, 123, 183, ?$

In the following number series,a wrong number is given. Find out that wrong number.
$16 \quad 19 \quad 21 \quad 30 \quad 46 \quad 71 \quad 107$

$5, 3, 4, ?, 38$

Find the next number in the series: $4, 9, 20, 43, 90, ?$