Finding the Fourth Proportional to 143,485.71, 197,956.77 and 89,750.31

Step by Step Solution

1. Step 1: Write the proportion equation
   143,485.71 : 197,956.77 = 89,750.31 : x
2. Step 2: Convert to fraction form
   143,485.71/197,956.77 = 89,750.31/x
3. Step 3: Cross multiply
   143,485.71x = 197,956.77 × 89,750.31
4. Step 4: Simplify right side
   143,485.71x = 17,766,681,474.10
5. Step 5: Solve for x
   x = 17,766,681,474.10/143,485.71
6. Step 6: Final answer
   x = 123,821.96