Finding the Fourth Proportional to 143,279.16, 197,710.51 and 89,570.09

Step by Step Solution

1. Step 1: Write the proportion equation
   143,279.16 : 197,710.51 = 89,570.09 : x
2. Step 2: Convert to fraction form
   143,279.16/197,710.51 = 89,570.09/x
3. Step 3: Cross multiply
   143,279.16x = 197,710.51 × 89,570.09
4. Step 4: Simplify right side
   143,279.16x = 17,708,948,174.65
5. Step 5: Solve for x
   x = 17,708,948,174.65/143,279.16
6. Step 6: Final answer
   x = 123,597.52