Finding the Fourth Proportional to 105,845.74, 158,766.81 and 49,672.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,845.74 : 158,766.81 = 49,672.78 : x
2. Step 2: Convert to fraction form
   105,845.74/158,766.81 = 49,672.78/x
3. Step 3: Cross multiply
   105,845.74x = 158,766.81 × 49,672.78
4. Step 4: Simplify right side
   105,845.74x = 7,886,388,824.43
5. Step 5: Solve for x
   x = 7,886,388,824.43/105,845.74
6. Step 6: Final answer
   x = 74,508.33