Finding the Fourth Proportional to 90,463.52, 124,836.71 and 54,647.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,463.52 : 124,836.71 = 54,647.30 : x
2. Step 2: Convert to fraction form
   90,463.52/124,836.71 = 54,647.30/x
3. Step 3: Cross multiply
   90,463.52x = 124,836.71 × 54,647.30
4. Step 4: Simplify right side
   90,463.52x = 6,821,989,142.38
5. Step 5: Solve for x
   x = 6,821,989,142.38/90,463.52
6. Step 6: Final answer
   x = 75,411.49