Finding the Fourth Proportional to 103,612.15, 155,159.02 and 82,876.15

Step by Step Solution

1. Step 1: Write the proportion equation
   103,612.15 : 155,159.02 = 82,876.15 : x
2. Step 2: Convert to fraction form
   103,612.15/155,159.02 = 82,876.15/x
3. Step 3: Cross multiply
   103,612.15x = 155,159.02 × 82,876.15
4. Step 4: Simplify right side
   103,612.15x = 12,858,982,215.37
5. Step 5: Solve for x
   x = 12,858,982,215.37/103,612.15
6. Step 6: Final answer
   x = 124,106.89