Finding the Fourth Proportional to 142,530.33, 196,712.72 and 82,089.21

Step by Step Solution

1. Step 1: Write the proportion equation
   142,530.33 : 196,712.72 = 82,089.21 : x
2. Step 2: Convert to fraction form
   142,530.33/196,712.72 = 82,089.21/x
3. Step 3: Cross multiply
   142,530.33x = 196,712.72 × 82,089.21
4. Step 4: Simplify right side
   142,530.33x = 16,147,990,387.74
5. Step 5: Solve for x
   x = 16,147,990,387.74/142,530.33
6. Step 6: Final answer
   x = 113,295.12