Finding the Fourth Proportional to 143,280.16, 197,711.89 and 89,571.09

Step by Step Solution

1. Step 1: Write the proportion equation
   143,280.16 : 197,711.89 = 89,571.09 : x
2. Step 2: Convert to fraction form
   143,280.16/197,711.89 = 89,571.09/x
3. Step 3: Cross multiply
   143,280.16x = 197,711.89 × 89,571.09
4. Step 4: Simplify right side
   143,280.16x = 17,709,269,493.26
5. Step 5: Solve for x
   x = 17,709,269,493.26/143,280.16
6. Step 6: Final answer
   x = 123,598.90