Finding the Fourth Proportional to 142,564.34, 196,721.53 and 82,154.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,564.34 : 196,721.53 = 82,154.78 : x
2. Step 2: Convert to fraction form
   142,564.34/196,721.53 = 82,154.78/x
3. Step 3: Cross multiply
   142,564.34x = 196,721.53 × 82,154.78
4. Step 4: Simplify right side
   142,564.34x = 16,161,614,018.41
5. Step 5: Solve for x
   x = 16,161,614,018.41/142,564.34
6. Step 6: Final answer
   x = 113,363.65