Finding the Fourth Proportional to 105,421.72, 158,132.39 and 34,344.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,421.72 : 158,132.39 = 34,344.27 : x
2. Step 2: Convert to fraction form
   105,421.72/158,132.39 = 34,344.27/x
3. Step 3: Cross multiply
   105,421.72x = 158,132.39 × 34,344.27
4. Step 4: Simplify right side
   105,421.72x = 5,430,941,721.51
5. Step 5: Solve for x
   x = 5,430,941,721.51/105,421.72
6. Step 6: Final answer
   x = 51,516.35