Finding the Fourth Proportional to 331,811.38, 497,718.89 and 82,493.38

Step by Step Solution

1. Step 1: Write the proportion equation
   331,811.38 : 497,718.89 = 82,493.38 : x
2. Step 2: Convert to fraction form
   331,811.38/497,718.89 = 82,493.38/x
3. Step 3: Cross multiply
   331,811.38x = 497,718.89 × 82,493.38
4. Step 4: Simplify right side
   331,811.38x = 41,058,510,624.89
5. Step 5: Solve for x
   x = 41,058,510,624.89/331,811.38
6. Step 6: Final answer
   x = 123,740.52