Finding the Fourth Proportional to 143,086.43, 197,419.26 and 89,425.95

Step by Step Solution

1. Step 1: Write the proportion equation
   143,086.43 : 197,419.26 = 89,425.95 : x
2. Step 2: Convert to fraction form
   143,086.43/197,419.26 = 89,425.95/x
3. Step 3: Cross multiply
   143,086.43x = 197,419.26 × 89,425.95
4. Step 4: Simplify right side
   143,086.43x = 17,654,404,873.80
5. Step 5: Solve for x
   x = 17,654,404,873.80/143,086.43
6. Step 6: Final answer
   x = 123,382.80