Finding the Fourth Proportional to 72,308.88, 99,774.38 and 45,432.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72,308.88 : 99,774.38 = 45,432.35 : x
2. Step 2: Convert to fraction form
   72,308.88/99,774.38 = 45,432.35/x
3. Step 3: Cross multiply
   72,308.88x = 99,774.38 × 45,432.35
4. Step 4: Simplify right side
   72,308.88x = 4,532,984,822.67
5. Step 5: Solve for x
   x = 4,532,984,822.67/72,308.88
6. Step 6: Final answer
   x = 62,689.19