Finding the Fourth Proportional to 90,613.50, 135,892.50 and 43,203.59

Step by Step Solution

1. Step 1: Write the proportion equation
   90,613.50 : 135,892.50 = 43,203.59 : x
2. Step 2: Convert to fraction form
   90,613.50/135,892.50 = 43,203.59/x
3. Step 3: Cross multiply
   90,613.50x = 135,892.50 × 43,203.59
4. Step 4: Simplify right side
   90,613.50x = 5,871,043,854.08
5. Step 5: Solve for x
   x = 5,871,043,854.08/90,613.50
6. Step 6: Final answer
   x = 64,792.15