Finding the Fourth Proportional to 90,513.72, 124,992.99 and 58,304.34

Step by Step Solution

1. Step 1: Write the proportion equation
   90,513.72 : 124,992.99 = 58,304.34 : x
2. Step 2: Convert to fraction form
   90,513.72/124,992.99 = 58,304.34/x
3. Step 3: Cross multiply
   90,513.72x = 124,992.99 × 58,304.34
4. Step 4: Simplify right side
   90,513.72x = 7,287,633,786.58
5. Step 5: Solve for x
   x = 7,287,633,786.58/90,513.72
6. Step 6: Final answer
   x = 80,514.13