Finding the Fourth Proportional to 65,118.50, 89,863.57 and 35,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,118.50 : 89,863.57 = 35,310.50 : x
2. Step 2: Convert to fraction form
   65,118.50/89,863.57 = 35,310.50/x
3. Step 3: Cross multiply
   65,118.50x = 89,863.57 × 35,310.50
4. Step 4: Simplify right side
   65,118.50x = 3,173,127,588.49
5. Step 5: Solve for x
   x = 3,173,127,588.49/65,118.50
6. Step 6: Final answer
   x = 48,728.51