In the first triangle, the hypotenuse has a length of $102-\sqrt{101}$ and the side opposite the $45^\circ$ angle has a length of 10. Let $x$ be the length of the side adjacent to the $45^\circ$ angle. Then by the Pythagorean Theorem, \begin{align*}
x^2 + 10^2 &= (102-\sqrt{101})^2\\
x^2 + 100 &= 102^2 - 204\sqrt{101} + 101\\
x^2 &= 101 - 204\sqrt{101} + 100\\
x &= \sqrt{101}-\sqrt{100} = \sqrt{101} - 10.
\end{align*} Therefore, the length of the hypotenuse in the second triangle is \begin{align*}
(\sqrt{101} - 10) + 14 &= \sqrt{101} + 4.
\end{align*} The length of the hypotenuse in the second triangle is $\boxed{\sqrt{101}+4}$.