Finding the Fourth Proportional to 90,626.17, 125,124.60 and 56,682.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,626.17 : 125,124.60 = 56,682.72 : x
2. Step 2: Convert to fraction form
   90,626.17/125,124.60 = 56,682.72/x
3. Step 3: Cross multiply
   90,626.17x = 125,124.60 × 56,682.72
4. Step 4: Simplify right side
   90,626.17x = 7,092,401,757.88
5. Step 5: Solve for x
   x = 7,092,401,757.88/90,626.17
6. Step 6: Final answer
   x = 78,259.97