Finding the Fourth Proportional to 105,617.62, 158,222.29 and 58,728.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,617.62 : 158,222.29 = 58,728.34 : x
2. Step 2: Convert to fraction form
   105,617.62/158,222.29 = 58,728.34/x
3. Step 3: Cross multiply
   105,617.62x = 158,222.29 × 58,728.34
4. Step 4: Simplify right side
   105,617.62x = 9,292,132,442.70
5. Step 5: Solve for x
   x = 9,292,132,442.70/105,617.62
6. Step 6: Final answer
   x = 87,979.00