Finding the Fourth Proportional to 142,620.03, 196,800.71 and 82,178.64

Step by Step Solution

1. Step 1: Write the proportion equation
   142,620.03 : 196,800.71 = 82,178.64 : x
2. Step 2: Convert to fraction form
   142,620.03/196,800.71 = 82,178.64/x
3. Step 3: Cross multiply
   142,620.03x = 196,800.71 × 82,178.64
4. Step 4: Simplify right side
   142,620.03x = 16,172,814,287.94
5. Step 5: Solve for x
   x = 16,172,814,287.94/142,620.03
6. Step 6: Final answer
   x = 113,397.92