Finding the Fourth Proportional to 142,559.37, 196,775.78 and 82,170.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142,559.37 : 196,775.78 = 82,170.37 : x
2. Step 2: Convert to fraction form
   142,559.37/196,775.78 = 82,170.37/x
3. Step 3: Cross multiply
   142,559.37x = 196,775.78 × 82,170.37
4. Step 4: Simplify right side
   142,559.37x = 16,169,139,500.40
5. Step 5: Solve for x
   x = 16,169,139,500.40/142,559.37
6. Step 6: Final answer
   x = 113,420.39