Finding the Fourth Proportional to 102,883.92, 154,111.20 and 82,785.12

Step by Step Solution

1. Step 1: Write the proportion equation
   102,883.92 : 154,111.20 = 82,785.12 : x
2. Step 2: Convert to fraction form
   102,883.92/154,111.20 = 82,785.12/x
3. Step 3: Cross multiply
   102,883.92x = 154,111.20 × 82,785.12
4. Step 4: Simplify right side
   102,883.92x = 12,758,114,185.34
5. Step 5: Solve for x
   x = 12,758,114,185.34/102,883.92
6. Step 6: Final answer
   x = 124,004.94