Finding the Fourth Proportional to 82,481, 123,951.90 and 77,170.28

Step by Step Solution

1. Step 1: Write the proportion equation
   82,481 : 123,951.90 = 77,170.28 : x
2. Step 2: Convert to fraction form
   82,481/123,951.90 = 77,170.28/x
3. Step 3: Cross multiply
   82,481x = 123,951.90 × 77,170.28
4. Step 4: Simplify right side
   82,481x = 9,565,402,829.53
5. Step 5: Solve for x
   x = 9,565,402,829.53/82,481
6. Step 6: Final answer
   x = 115,970.99