Finding the Fourth Proportional to 142,443.04, 213,829.54 and 83,321.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,443.04 : 213,829.54 = 83,321.14 : x
2. Step 2: Convert to fraction form
   142,443.04/213,829.54 = 83,321.14/x
3. Step 3: Cross multiply
   142,443.04x = 213,829.54 × 83,321.14
4. Step 4: Simplify right side
   142,443.04x = 17,816,521,038.48
5. Step 5: Solve for x
   x = 17,816,521,038.48/142,443.04
6. Step 6: Final answer
   x = 125,078.21