Finding the Fourth Proportional to 105,443.78, 158,165.73 and 43,114.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,443.78 : 158,165.73 = 43,114.28 : x
2. Step 2: Convert to fraction form
   105,443.78/158,165.73 = 43,114.28/x
3. Step 3: Cross multiply
   105,443.78x = 158,165.73 × 43,114.28
4. Step 4: Simplify right side
   105,443.78x = 6,819,200,778.80
5. Step 5: Solve for x
   x = 6,819,200,778.80/105,443.78
6. Step 6: Final answer
   x = 64,671.44