For the given hypothetical reactions, the equilibrium constants are as follows:
$X \rightleftharpoons Y; K_1 = 1.0$
$
$$Y \rightleftharpoons Z; K_2 = 2.0$
$
$$Z \rightleftharpoons W; K_3 = 4.0$
The equilibrium constant for the reaction $X \rightleftharpoons W$ is:
