Finding the Fourth Proportional to 139,449.72, 192,456.99 and 82,861.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,449.72 : 192,456.99 = 82,861.14 : x
2. Step 2: Convert to fraction form
   139,449.72/192,456.99 = 82,861.14/x
3. Step 3: Cross multiply
   139,449.72x = 192,456.99 × 82,861.14
4. Step 4: Simplify right side
   139,449.72x = 15,947,205,592.37
5. Step 5: Solve for x
   x = 15,947,205,592.37/139,449.72
6. Step 6: Final answer
   x = 114,358.10