Finding the Fourth Proportional to 140,909.60, 194,456.83 and 80,488.26

Step by Step Solution

1. Step 1: Write the proportion equation
   140,909.60 : 194,456.83 = 80,488.26 : x
2. Step 2: Convert to fraction form
   140,909.60/194,456.83 = 80,488.26/x
3. Step 3: Cross multiply
   140,909.60x = 194,456.83 × 80,488.26
4. Step 4: Simplify right side
   140,909.60x = 15,651,491,891.82
5. Step 5: Solve for x
   x = 15,651,491,891.82/140,909.60
6. Step 6: Final answer
   x = 111,074.70