Finding the Fourth Proportional to 64,835.59, 89,481.71 and 39,337.90

Step by Step Solution

1. Step 1: Write the proportion equation
   64,835.59 : 89,481.71 = 39,337.90 : x
2. Step 2: Convert to fraction form
   64,835.59/89,481.71 = 39,337.90/x
3. Step 3: Cross multiply
   64,835.59x = 89,481.71 × 39,337.90
4. Step 4: Simplify right side
   64,835.59x = 3,520,022,937.78
5. Step 5: Solve for x
   x = 3,520,022,937.78/64,835.59
6. Step 6: Final answer
   x = 54,291.52