Finding the Fourth Proportional to 64,505.52, 88,799.16 and 55,500.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,505.52 : 88,799.16 = 55,500.72 : x
2. Step 2: Convert to fraction form
   64,505.52/88,799.16 = 55,500.72/x
3. Step 3: Cross multiply
   64,505.52x = 88,799.16 × 55,500.72
4. Step 4: Simplify right side
   64,505.52x = 4,928,417,315.40
5. Step 5: Solve for x
   x = 4,928,417,315.40/64,505.52
6. Step 6: Final answer
   x = 76,403.03