Finding the Fourth Proportional to 90,456.97, 124,748.94 and 56,468.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,456.97 : 124,748.94 = 56,468.61 : x
2. Step 2: Convert to fraction form
   90,456.97/124,748.94 = 56,468.61/x
3. Step 3: Cross multiply
   90,456.97x = 124,748.94 × 56,468.61
4. Step 4: Simplify right side
   90,456.97x = 7,044,399,305.60
5. Step 5: Solve for x
   x = 7,044,399,305.60/90,456.97
6. Step 6: Final answer
   x = 77,875.69