Finding the Fourth Proportional to 142,685.92, 196,889.69 and 82,276.41

Step by Step Solution

1. Step 1: Write the proportion equation
   142,685.92 : 196,889.69 = 82,276.41 : x
2. Step 2: Convert to fraction form
   142,685.92/196,889.69 = 82,276.41/x
3. Step 3: Cross multiply
   142,685.92x = 196,889.69 × 82,276.41
4. Step 4: Simplify right side
   142,685.92x = 16,199,376,859.21
5. Step 5: Solve for x
   x = 16,199,376,859.21/142,685.92
6. Step 6: Final answer
   x = 113,531.71