Finding the Fourth Proportional to 65,747.50, 90,731.56 and 35,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,747.50 : 90,731.56 = 35,939.50 : x
2. Step 2: Convert to fraction form
   65,747.50/90,731.56 = 35,939.50/x
3. Step 3: Cross multiply
   65,747.50x = 90,731.56 × 35,939.50
4. Step 4: Simplify right side
   65,747.50x = 3,260,846,900.62
5. Step 5: Solve for x
   x = 3,260,846,900.62/65,747.50
6. Step 6: Final answer
   x = 49,596.52