Finding the Fourth Proportional to 105,815.90, 158,733.05 and 34,717.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,815.90 : 158,733.05 = 34,717.20 : x
2. Step 2: Convert to fraction form
   105,815.90/158,733.05 = 34,717.20/x
3. Step 3: Cross multiply
   105,815.90x = 158,733.05 × 34,717.20
4. Step 4: Simplify right side
   105,815.90x = 5,510,766,869.87
5. Step 5: Solve for x
   x = 5,510,766,869.87/105,815.90
6. Step 6: Final answer
   x = 52,078.82