Finding the Fourth Proportional to 123,839.63, 170,951.01 and 83,607.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123,839.63 : 170,951.01 = 83,607.89 : x
2. Step 2: Convert to fraction form
   123,839.63/170,951.01 = 83,607.89/x
3. Step 3: Cross multiply
   123,839.63x = 170,951.01 × 83,607.89
4. Step 4: Simplify right side
   123,839.63x = 14,292,851,966.67
5. Step 5: Solve for x
   x = 14,292,851,966.67/123,839.63
6. Step 6: Final answer
   x = 115,414.20