Finding the Fourth Proportional to 72,459.32, 99,951.40 and 45,559.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,459.32 : 99,951.40 = 45,559.20 : x
2. Step 2: Convert to fraction form
   72,459.32/99,951.40 = 45,559.20/x
3. Step 3: Cross multiply
   72,459.32x = 99,951.40 × 45,559.20
4. Step 4: Simplify right side
   72,459.32x = 4,553,705,822.88
5. Step 5: Solve for x
   x = 4,553,705,822.88/72,459.32
6. Step 6: Final answer
   x = 62,845.00