Finding the Fourth Proportional to 80,814.17, 111,414.86 and 56,582.55

Step by Step Solution

1. Step 1: Write the proportion equation
   80,814.17 : 111,414.86 = 56,582.55 : x
2. Step 2: Convert to fraction form
   80,814.17/111,414.86 = 56,582.55/x
3. Step 3: Cross multiply
   80,814.17x = 111,414.86 × 56,582.55
4. Step 4: Simplify right side
   80,814.17x = 6,304,136,886.69
5. Step 5: Solve for x
   x = 6,304,136,886.69/80,814.17
6. Step 6: Final answer
   x = 78,007.82