Finding the Fourth Proportional to 142,570.78, 196,791.53 and 82,181.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,570.78 : 196,791.53 = 82,181.79 : x
2. Step 2: Convert to fraction form
   142,570.78/196,791.53 = 82,181.79/x
3. Step 3: Cross multiply
   142,570.78x = 196,791.53 × 82,181.79
4. Step 4: Simplify right side
   142,570.78x = 16,172,679,781.33
5. Step 5: Solve for x
   x = 16,172,679,781.33/142,570.78
6. Step 6: Final answer
   x = 113,436.14