Finding the Fourth Proportional to 143,065.40, 197,368.62 and 86,444

Step by Step Solution

1. Step 1: Write the proportion equation
   143,065.40 : 197,368.62 = 86,444 : x
2. Step 2: Convert to fraction form
   143,065.40/197,368.62 = 86,444/x
3. Step 3: Cross multiply
   143,065.40x = 197,368.62 × 86,444
4. Step 4: Simplify right side
   143,065.40x = 17,061,332,987.28
5. Step 5: Solve for x
   x = 17,061,332,987.28/143,065.40
6. Step 6: Final answer
   x = 119,255.48