Finding the Fourth Proportional to 259,937.43, 389,919.98 and 82,458.33

Step by Step Solution

1. Step 1: Write the proportion equation
   259,937.43 : 389,919.98 = 82,458.33 : x
2. Step 2: Convert to fraction form
   259,937.43/389,919.98 = 82,458.33/x
3. Step 3: Cross multiply
   259,937.43x = 389,919.98 × 82,458.33
4. Step 4: Simplify right side
   259,937.43x = 32,152,150,384.43
5. Step 5: Solve for x
   x = 32,152,150,384.43/259,937.43
6. Step 6: Final answer
   x = 123,691.88