Finding the Fourth Proportional to 90,631.46, 124,973.90 and 56,627.53

Step by Step Solution

1. Step 1: Write the proportion equation
   90,631.46 : 124,973.90 = 56,627.53 : x
2. Step 2: Convert to fraction form
   90,631.46/124,973.90 = 56,627.53/x
3. Step 3: Cross multiply
   90,631.46x = 124,973.90 × 56,627.53
4. Step 4: Simplify right side
   90,631.46x = 7,076,962,788.17
5. Step 5: Solve for x
   x = 7,076,962,788.17/90,631.46
6. Step 6: Final answer
   x = 78,085.06