Finding the Fourth Proportional to 143,100.80, 197,517.60 and 89,353.28

Step by Step Solution

1. Step 1: Write the proportion equation
   143,100.80 : 197,517.60 = 89,353.28 : x
2. Step 2: Convert to fraction form
   143,100.80/197,517.60 = 89,353.28/x
3. Step 3: Cross multiply
   143,100.80x = 197,517.60 × 89,353.28
4. Step 4: Simplify right side
   143,100.80x = 17,648,845,417.73
5. Step 5: Solve for x
   x = 17,648,845,417.73/143,100.80
6. Step 6: Final answer
   x = 123,331.56