Finding the Fourth Proportional to 65,057.50, 89,779.41 and 35,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,057.50 : 89,779.41 = 35,249.50 : x
2. Step 2: Convert to fraction form
   65,057.50/89,779.41 = 35,249.50/x
3. Step 3: Cross multiply
   65,057.50x = 89,779.41 × 35,249.50
4. Step 4: Simplify right side
   65,057.50x = 3,164,679,312.80
5. Step 5: Solve for x
   x = 3,164,679,312.80/65,057.50
6. Step 6: Final answer
   x = 48,644.34