Finding the Fourth Proportional to 105,414.72, 158,139.36 and 43,068.48

Step by Step Solution

1. Step 1: Write the proportion equation
   105,414.72 : 158,139.36 = 43,068.48 : x
2. Step 2: Convert to fraction form
   105,414.72/158,139.36 = 43,068.48/x
3. Step 3: Cross multiply
   105,414.72x = 158,139.36 × 43,068.48
4. Step 4: Simplify right side
   105,414.72x = 6,810,821,863.37
5. Step 5: Solve for x
   x = 6,810,821,863.37/105,414.72
6. Step 6: Final answer
   x = 64,609.78