Finding the Fourth Proportional to 52,285.20, 72,153.42 and 28,411.94

Step by Step Solution

1. Step 1: Write the proportion equation
   52,285.20 : 72,153.42 = 28,411.94 : x
2. Step 2: Convert to fraction form
   52,285.20/72,153.42 = 28,411.94/x
3. Step 3: Cross multiply
   52,285.20x = 72,153.42 × 28,411.94
4. Step 4: Simplify right side
   52,285.20x = 2,050,018,639.83
5. Step 5: Solve for x
   x = 2,050,018,639.83/52,285.20
6. Step 6: Final answer
   x = 39,208.39