Finding the Fourth Proportional to 142,602.76, 213,832.14 and 83,456.20

Step by Step Solution

1. Step 1: Write the proportion equation
   142,602.76 : 213,832.14 = 83,456.20 : x
2. Step 2: Convert to fraction form
   142,602.76/213,832.14 = 83,456.20/x
3. Step 3: Cross multiply
   142,602.76x = 213,832.14 × 83,456.20
4. Step 4: Simplify right side
   142,602.76x = 17,845,617,842.27
5. Step 5: Solve for x
   x = 17,845,617,842.27/142,602.76
6. Step 6: Final answer
   x = 125,142.16