Finding the Fourth Proportional to 82,112.60, 123,023.10 and 76,863.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,112.60 : 123,023.10 = 76,863.80 : x
2. Step 2: Convert to fraction form
   82,112.60/123,023.10 = 76,863.80/x
3. Step 3: Cross multiply
   82,112.60x = 123,023.10 × 76,863.80
4. Step 4: Simplify right side
   82,112.60x = 9,456,022,953.78
5. Step 5: Solve for x
   x = 9,456,022,953.78/82,112.60
6. Step 6: Final answer
   x = 115,159.22