Finding the Fourth Proportional to 331,918.72, 497,878.18 and 82,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   331,918.72 : 497,878.18 = 82,600.72 : x
2. Step 2: Convert to fraction form
   331,918.72/497,878.18 = 82,600.72/x
3. Step 3: Cross multiply
   331,918.72x = 497,878.18 × 82,600.72
4. Step 4: Simplify right side
   331,918.72x = 41,125,096,140.29
5. Step 5: Solve for x
   x = 41,125,096,140.29/331,918.72
6. Step 6: Final answer
   x = 123,901.10