Finding the Fourth Proportional to 76,086.88, 105,005.04 and 42,553.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,086.88 : 105,005.04 = 42,553.12 : x
2. Step 2: Convert to fraction form
   76,086.88/105,005.04 = 42,553.12/x
3. Step 3: Cross multiply
   76,086.88x = 105,005.04 × 42,553.12
4. Step 4: Simplify right side
   76,086.88x = 4,468,292,067.72
5. Step 5: Solve for x
   x = 4,468,292,067.72/76,086.88
6. Step 6: Final answer
   x = 58,726.18