Finding the Fourth Proportional to 142,442.42, 213,828.59 and 83,320.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,442.42 : 213,828.59 = 83,320.52 : x
2. Step 2: Convert to fraction form
   142,442.42/213,828.59 = 83,320.52/x
3. Step 3: Cross multiply
   142,442.42x = 213,828.59 × 83,320.52
4. Step 4: Simplify right side
   142,442.42x = 17,816,308,448.83
5. Step 5: Solve for x
   x = 17,816,308,448.83/142,442.42
6. Step 6: Final answer
   x = 125,077.27