Finding the Fourth Proportional to 80,784.18, 111,500.55 and 52,440.66

Step by Step Solution

1. Step 1: Write the proportion equation
   80,784.18 : 111,500.55 = 52,440.66 : x
2. Step 2: Convert to fraction form
   80,784.18/111,500.55 = 52,440.66/x
3. Step 3: Cross multiply
   80,784.18x = 111,500.55 × 52,440.66
4. Step 4: Simplify right side
   80,784.18x = 5,847,162,432.36
5. Step 5: Solve for x
   x = 5,847,162,432.36/80,784.18
6. Step 6: Final answer
   x = 72,380.04