The Law of Cosines is given by:
\[b^2 = a^2 + c^2 - 2ac\cos B\]
Substituting the given values, we get:
\[b^2 = (15.1)^2 + (19.2)^2 - 2(15.1)(19.2)\cos(168.2^{\circ})\]
Solving this, we get:
\[b^2 = 228.01 + 368.64 + 1164.24 = 1760.89\]
Taking the square root of
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