Finding the Fourth Proportional to 65,047.50, 89,766.09 and 35,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,047.50 : 89,766.09 = 35,239.50 : x
2. Step 2: Convert to fraction form
   65,047.50/89,766.09 = 35,239.50/x
3. Step 3: Cross multiply
   65,047.50x = 89,766.09 × 35,239.50
4. Step 4: Simplify right side
   65,047.50x = 3,163,312,128.56
5. Step 5: Solve for x
   x = 3,163,312,128.56/65,047.50
6. Step 6: Final answer
   x = 48,630.80