Finding the Fourth Proportional to 142,578.56, 196,782.82 and 82,138.38

Step by Step Solution

1. Step 1: Write the proportion equation
   142,578.56 : 196,782.82 = 82,138.38 : x
2. Step 2: Convert to fraction form
   142,578.56/196,782.82 = 82,138.38/x
3. Step 3: Cross multiply
   142,578.56x = 196,782.82 × 82,138.38
4. Step 4: Simplify right side
   142,578.56x = 16,163,422,046.63
5. Step 5: Solve for x
   x = 16,163,422,046.63/142,578.56
6. Step 6: Final answer
   x = 113,365.03