Finding the Fourth Proportional to 142,789.53, 197,049.33 and 82,359.21

Step by Step Solution

1. Step 1: Write the proportion equation
   142,789.53 : 197,049.33 = 82,359.21 : x
2. Step 2: Convert to fraction form
   142,789.53/197,049.33 = 82,359.21/x
3. Step 3: Cross multiply
   142,789.53x = 197,049.33 × 82,359.21
4. Step 4: Simplify right side
   142,789.53x = 16,228,827,149.83
5. Step 5: Solve for x
   x = 16,228,827,149.83/142,789.53
6. Step 6: Final answer
   x = 113,655.58