Finding the Fourth Proportional to 65,086.50, 89,819.37 and 35,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,086.50 : 89,819.37 = 35,278.50 : x
2. Step 2: Convert to fraction form
   65,086.50/89,819.37 = 35,278.50/x
3. Step 3: Cross multiply
   65,086.50x = 89,819.37 × 35,278.50
4. Step 4: Simplify right side
   65,086.50x = 3,168,692,644.55
5. Step 5: Solve for x
   x = 3,168,692,644.55/65,086.50
6. Step 6: Final answer
   x = 48,684.33