Finding the Fourth Proportional to 143,258.74, 197,698.24 and 89,574.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,258.74 : 197,698.24 = 89,574.88 : x
2. Step 2: Convert to fraction form
   143,258.74/197,698.24 = 89,574.88/x
3. Step 3: Cross multiply
   143,258.74x = 197,698.24 × 89,574.88
4. Step 4: Simplify right side
   143,258.74x = 17,708,795,406.03
5. Step 5: Solve for x
   x = 17,708,795,406.03/143,258.74
6. Step 6: Final answer
   x = 123,614.07