Finding the Fourth Proportional to 142,144.29, 196,142.31 and 84,786.75

Step by Step Solution

1. Step 1: Write the proportion equation
   142,144.29 : 196,142.31 = 84,786.75 : x
2. Step 2: Convert to fraction form
   142,144.29/196,142.31 = 84,786.75/x
3. Step 3: Cross multiply
   142,144.29x = 196,142.31 × 84,786.75
4. Step 4: Simplify right side
   142,144.29x = 16,630,269,002.39
5. Step 5: Solve for x
   x = 16,630,269,002.39/142,144.29
6. Step 6: Final answer
   x = 116,995.69