Finding the Fourth Proportional to 143,048.43, 197,345.16 and 86,427

Step by Step Solution

1. Step 1: Write the proportion equation
   143,048.43 : 197,345.16 = 86,427 : x
2. Step 2: Convert to fraction form
   143,048.43/197,345.16 = 86,427/x
3. Step 3: Cross multiply
   143,048.43x = 197,345.16 × 86,427
4. Step 4: Simplify right side
   143,048.43x = 17,055,950,143.32
5. Step 5: Solve for x
   x = 17,055,950,143.32/143,048.43
6. Step 6: Final answer
   x = 119,232.00