Finding the Fourth Proportional to 142,561.76, 196,744.37 and 82,131.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,561.76 : 196,744.37 = 82,131.31 : x
2. Step 2: Convert to fraction form
   142,561.76/196,744.37 = 82,131.31/x
3. Step 3: Cross multiply
   142,561.76x = 196,744.37 × 82,131.31
4. Step 4: Simplify right side
   142,561.76x = 16,158,871,940.71
5. Step 5: Solve for x
   x = 16,158,871,940.71/142,561.76
6. Step 6: Final answer
   x = 113,346.47