To find \(-123.45 - (-234.76)\), we can use the additive inverse. The additive inverse of a number is simply its opposite. Thus:
\[-(-234.76) = +234.76\]
Now we can rewrite the expression:
\[-123.45 - (-234.76) = -123.45 + 234.76\]
Next, we perform the addition:
\[ -123.45 + 234.76 = 234.76 - 123.45 = 111.31 \]
Therefore, the result of \(-123.45 - (-234.76)\) is:
111.31.