Finding the Fourth Proportional to 105,391.46, 158,055.68 and 57,352.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,391.46 : 158,055.68 = 57,352.16 : x
2. Step 2: Convert to fraction form
   105,391.46/158,055.68 = 57,352.16/x
3. Step 3: Cross multiply
   105,391.46x = 158,055.68 × 57,352.16
4. Step 4: Simplify right side
   105,391.46x = 9,064,834,648.27
5. Step 5: Solve for x
   x = 9,064,834,648.27/105,391.46
6. Step 6: Final answer
   x = 86,011.09