Finding the Fourth Proportional to 142,602, 196,842.60 and 82,986

Step by Step Solution

1. Step 1: Write the proportion equation
   142,602 : 196,842.60 = 82,986 : x
2. Step 2: Convert to fraction form
   142,602/196,842.60 = 82,986/x
3. Step 3: Cross multiply
   142,602x = 196,842.60 × 82,986
4. Step 4: Simplify right side
   142,602x = 16,335,180,003.60
5. Step 5: Solve for x
   x = 16,335,180,003.60/142,602
6. Step 6: Final answer
   x = 114,550.85