Finding the Fourth Proportional to 142,570.17, 196,790.66 and 82,181.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,570.17 : 196,790.66 = 82,181.18 : x
2. Step 2: Convert to fraction form
   142,570.17/196,790.66 = 82,181.18/x
3. Step 3: Cross multiply
   142,570.17x = 196,790.66 × 82,181.18
4. Step 4: Simplify right side
   142,570.17x = 16,172,488,651.78
5. Step 5: Solve for x
   x = 16,172,488,651.78/142,570.17
6. Step 6: Final answer
   x = 113,435.29