Finding the Fourth Proportional to 159,143.69, 220,196.59 and 138,768.24

Step by Step Solution

1. Step 1: Write the proportion equation
   159,143.69 : 220,196.59 = 138,768.24 : x
2. Step 2: Convert to fraction form
   159,143.69/220,196.59 = 138,768.24/x
3. Step 3: Cross multiply
   159,143.69x = 220,196.59 × 138,768.24
4. Step 4: Simplify right side
   159,143.69x = 30,556,291,453.48
5. Step 5: Solve for x
   x = 30,556,291,453.48/159,143.69
6. Step 6: Final answer
   x = 192,004.42