Finding the Fourth Proportional to 113,456.43, 156,618.33 and 80,771.94

Step by Step Solution

1. Step 1: Write the proportion equation
   113,456.43 : 156,618.33 = 80,771.94 : x
2. Step 2: Convert to fraction form
   113,456.43/156,618.33 = 80,771.94/x
3. Step 3: Cross multiply
   113,456.43x = 156,618.33 × 80,771.94
4. Step 4: Simplify right side
   113,456.43x = 12,650,366,353.66
5. Step 5: Solve for x
   x = 12,650,366,353.66/113,456.43
6. Step 6: Final answer
   x = 111,499.77