Finding the Fourth Proportional to 103,604.90, 155,148.15 and 82,868.90

Step by Step Solution

1. Step 1: Write the proportion equation
   103,604.90 : 155,148.15 = 82,868.90 : x
2. Step 2: Convert to fraction form
   103,604.90/155,148.15 = 82,868.90/x
3. Step 3: Cross multiply
   103,604.90x = 155,148.15 × 82,868.90
4. Step 4: Simplify right side
   103,604.90x = 12,856,956,527.54
5. Step 5: Solve for x
   x = 12,856,956,527.54/103,604.90
6. Step 6: Final answer
   x = 124,096.03