Finding the Fourth Proportional to 83,657.80, 124,892.69 and 80,158.60

Step by Step Solution

1. Step 1: Write the proportion equation
   83,657.80 : 124,892.69 = 80,158.60 : x
2. Step 2: Convert to fraction form
   83,657.80/124,892.69 = 80,158.60/x
3. Step 3: Cross multiply
   83,657.80x = 124,892.69 × 80,158.60
4. Step 4: Simplify right side
   83,657.80x = 10,011,223,180.63
5. Step 5: Solve for x
   x = 10,011,223,180.63/83,657.80
6. Step 6: Final answer
   x = 119,668.74