Finding the Fourth Proportional to 143,667.02, 198,265.73 and 89,249.18

Step by Step Solution

1. Step 1: Write the proportion equation
   143,667.02 : 198,265.73 = 89,249.18 : x
2. Step 2: Convert to fraction form
   143,667.02/198,265.73 = 89,249.18/x
3. Step 3: Cross multiply
   143,667.02x = 198,265.73 × 89,249.18
4. Step 4: Simplify right side
   143,667.02x = 17,695,053,824.60
5. Step 5: Solve for x
   x = 17,695,053,824.60/143,667.02
6. Step 6: Final answer
   x = 123,167.13