Finding the Fourth Proportional to 362,128.50, 499,737.33 and 203,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   362,128.50 : 499,737.33 = 203,152.50 : x
2. Step 2: Convert to fraction form
   362,128.50/499,737.33 = 203,152.50/x
3. Step 3: Cross multiply
   362,128.50x = 499,737.33 × 203,152.50
4. Step 4: Simplify right side
   362,128.50x = 101,522,887,932.83
5. Step 5: Solve for x
   x = 101,522,887,932.83/362,128.50
6. Step 6: Final answer
   x = 280,350.45