Finding the Fourth Proportional to 72,422.59, 99,921.17 and 45,591.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,422.59 : 99,921.17 = 45,591.88 : x
2. Step 2: Convert to fraction form
   72,422.59/99,921.17 = 45,591.88/x
3. Step 3: Cross multiply
   72,422.59x = 99,921.17 × 45,591.88
4. Step 4: Simplify right side
   72,422.59x = 4,555,593,992.10
5. Step 5: Solve for x
   x = 4,555,593,992.10/72,422.59
6. Step 6: Final answer
   x = 62,902.94