Finding the Fourth Proportional to 72,407.61, 108,580.61 and 32,989.77

Step by Step Solution

1. Step 1: Write the proportion equation
   72,407.61 : 108,580.61 = 32,989.77 : x
2. Step 2: Convert to fraction form
   72,407.61/108,580.61 = 32,989.77/x
3. Step 3: Cross multiply
   72,407.61x = 108,580.61 × 32,989.77
4. Step 4: Simplify right side
   72,407.61x = 3,582,049,432.83
5. Step 5: Solve for x
   x = 3,582,049,432.83/72,407.61
6. Step 6: Final answer
   x = 49,470.62