Fill in the $P(X = x)$ values to give a legitimate probability distribution for the discrete random variable $X$, whose possible values are $-4, 2, 4, 5,$ and $6$.
Value $x$ of $X$ $P(X = x)$
$-4$ $0.19$
$2$ $oxed{ }$
$4$ $0.18$
$5$ $oxed{ }$
$6$ $0.23$