Finding the Fourth Proportional to 105,487.92, 158,231.52 and 43,158.42

Step by Step Solution

1. Step 1: Write the proportion equation
   105,487.92 : 158,231.52 = 43,158.42 : x
2. Step 2: Convert to fraction form
   105,487.92/158,231.52 = 43,158.42/x
3. Step 3: Cross multiply
   105,487.92x = 158,231.52 × 43,158.42
4. Step 4: Simplify right side
   105,487.92x = 6,829,022,397.40
5. Step 5: Solve for x
   x = 6,829,022,397.40/105,487.92
6. Step 6: Final answer
   x = 64,737.48