Finding the Fourth Proportional to 142,216, 213,358.56 and 43,720

Step by Step Solution

1. Step 1: Write the proportion equation
   142,216 : 213,358.56 = 43,720 : x
2. Step 2: Convert to fraction form
   142,216/213,358.56 = 43,720/x
3. Step 3: Cross multiply
   142,216x = 213,358.56 × 43,720
4. Step 4: Simplify right side
   142,216x = 9,328,036,243.20
5. Step 5: Solve for x
   x = 9,328,036,243.20/142,216
6. Step 6: Final answer
   x = 65,590.62