Finding the Fourth Proportional to 82,003.24, 123,021.55 and 31,398.68

Step by Step Solution

1. Step 1: Write the proportion equation
   82,003.24 : 123,021.55 = 31,398.68 : x
2. Step 2: Convert to fraction form
   82,003.24/123,021.55 = 31,398.68/x
3. Step 3: Cross multiply
   82,003.24x = 123,021.55 × 31,398.68
4. Step 4: Simplify right side
   82,003.24x = 3,862,714,281.55
5. Step 5: Solve for x
   x = 3,862,714,281.55/82,003.24
6. Step 6: Final answer
   x = 47,104.41