Finding the Fourth Proportional to 143,169.27, 197,672.45 and 89,478.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143,169.27 : 197,672.45 = 89,478.42 : x
2. Step 2: Convert to fraction form
   143,169.27/197,672.45 = 89,478.42/x
3. Step 3: Cross multiply
   143,169.27x = 197,672.45 × 89,478.42
4. Step 4: Simplify right side
   143,169.27x = 17,687,418,056.14
5. Step 5: Solve for x
   x = 17,687,418,056.14/143,169.27
6. Step 6: Final answer
   x = 123,542.00