A force $\vec { F } = ( \hat { i } + 2 \hat { j } + 3 \hat { k } ) \mathrm { N }$ acts at a point $( 4 \hat { i } + 3 \hat { j } - \widehat { k } ) \mathrm { m }$. Then the magnitude of torque about the point $( \hat { i } + 2 \hat { j } + \widehat { k } ) \mathrm { m }$ will be $\sqrt { x } \mathrm {~N} - \mathrm { m }$. The value of $x$ is.