Finding the Fourth Proportional to 105,742.76, 158,621.43 and 30,863.53

Step by Step Solution

1. Step 1: Write the proportion equation
   105,742.76 : 158,621.43 = 30,863.53 : x
2. Step 2: Convert to fraction form
   105,742.76/158,621.43 = 30,863.53/x
3. Step 3: Cross multiply
   105,742.76x = 158,621.43 × 30,863.53
4. Step 4: Simplify right side
   105,742.76x = 4,895,616,470.34
5. Step 5: Solve for x
   x = 4,895,616,470.34/105,742.76
6. Step 6: Final answer
   x = 46,297.42