Finding the Fourth Proportional to 143,017.33, 197,281.89 and 89,208.90

Step by Step Solution

1. Step 1: Write the proportion equation
   143,017.33 : 197,281.89 = 89,208.90 : x
2. Step 2: Convert to fraction form
   143,017.33/197,281.89 = 89,208.90/x
3. Step 3: Cross multiply
   143,017.33x = 197,281.89 × 89,208.90
4. Step 4: Simplify right side
   143,017.33x = 17,599,300,396.82
5. Step 5: Solve for x
   x = 17,599,300,396.82/143,017.33
6. Step 6: Final answer
   x = 123,057.12