Finding the Fourth Proportional to 143,020.85, 197,286.71 and 89,212.41

Step by Step Solution

1. Step 1: Write the proportion equation
   143,020.85 : 197,286.71 = 89,212.41 : x
2. Step 2: Convert to fraction form
   143,020.85/197,286.71 = 89,212.41/x
3. Step 3: Cross multiply
   143,020.85x = 197,286.71 × 89,212.41
4. Step 4: Simplify right side
   143,020.85x = 17,600,422,414.01
5. Step 5: Solve for x
   x = 17,600,422,414.01/143,020.85
6. Step 6: Final answer
   x = 123,061.94