Finding the Fourth Proportional to 103,632.24, 155,273.40 and 82,812

Step by Step Solution

1. Step 1: Write the proportion equation
   103,632.24 : 155,273.40 = 82,812 : x
2. Step 2: Convert to fraction form
   103,632.24/155,273.40 = 82,812/x
3. Step 3: Cross multiply
   103,632.24x = 155,273.40 × 82,812
4. Step 4: Simplify right side
   103,632.24x = 12,858,500,800.80
5. Step 5: Solve for x
   x = 12,858,500,800.80/103,632.24
6. Step 6: Final answer
   x = 124,078.19