Finding the Fourth Proportional to 339,296.76, 508,940.82 and 83,131.92

Step by Step Solution

1. Step 1: Write the proportion equation
   339,296.76 : 508,940.82 = 83,131.92 : x
2. Step 2: Convert to fraction form
   339,296.76/508,940.82 = 83,131.92/x
3. Step 3: Cross multiply
   339,296.76x = 508,940.82 × 83,131.92
4. Step 4: Simplify right side
   339,296.76x = 42,309,227,532.97
5. Step 5: Solve for x
   x = 42,309,227,532.97/339,296.76
6. Step 6: Final answer
   x = 124,696.82