Finding the Fourth Proportional to 142,825.38, 213,817.42 and 105,551.61

Step by Step Solution

1. Step 1: Write the proportion equation
   142,825.38 : 213,817.42 = 105,551.61 : x
2. Step 2: Convert to fraction form
   142,825.38/213,817.42 = 105,551.61/x
3. Step 3: Cross multiply
   142,825.38x = 213,817.42 × 105,551.61
4. Step 4: Simplify right side
   142,825.38x = 22,568,772,257.17
5. Step 5: Solve for x
   x = 22,568,772,257.17/142,825.38
6. Step 6: Final answer
   x = 158,016.54