Finding the Fourth Proportional to 80,642.17, 111,336.15 and 52,011.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,642.17 : 111,336.15 = 52,011.10 : x
2. Step 2: Convert to fraction form
   80,642.17/111,336.15 = 52,011.10/x
3. Step 3: Cross multiply
   80,642.17x = 111,336.15 × 52,011.10
4. Step 4: Simplify right side
   80,642.17x = 5,790,715,631.27
5. Step 5: Solve for x
   x = 5,790,715,631.27/80,642.17
6. Step 6: Final answer
   x = 71,807.54