Finding the Fourth Proportional to 64,308.69, 88,697.21 and 56,337.08

Step by Step Solution

1. Step 1: Write the proportion equation
   64,308.69 : 88,697.21 = 56,337.08 : x
2. Step 2: Convert to fraction form
   64,308.69/88,697.21 = 56,337.08/x
3. Step 3: Cross multiply
   64,308.69x = 88,697.21 × 56,337.08
4. Step 4: Simplify right side
   64,308.69x = 4,996,941,090.38
5. Step 5: Solve for x
   x = 4,996,941,090.38/64,308.69
6. Step 6: Final answer
   x = 77,702.42