Finding the Fourth Proportional to 105,869.82, 158,771.26 and 34,780.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,869.82 : 158,771.26 = 34,780.78 : x
2. Step 2: Convert to fraction form
   105,869.82/158,771.26 = 34,780.78/x
3. Step 3: Cross multiply
   105,869.82x = 158,771.26 × 34,780.78
4. Step 4: Simplify right side
   105,869.82x = 5,522,188,264.38
5. Step 5: Solve for x
   x = 5,522,188,264.38/105,869.82
6. Step 6: Final answer
   x = 52,160.17