Finding the Fourth Proportional to 142,577.92, 196,735.50 and 82,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,577.92 : 196,735.50 = 82,136.72 : x
2. Step 2: Convert to fraction form
   142,577.92/196,735.50 = 82,136.72/x
3. Step 3: Cross multiply
   142,577.92x = 196,735.50 × 82,136.72
4. Step 4: Simplify right side
   142,577.92x = 16,159,208,677.56
5. Step 5: Solve for x
   x = 16,159,208,677.56/142,577.92
6. Step 6: Final answer
   x = 113,335.98