Finding the Fourth Proportional to 139,275.74, 192,132.78 and 82,647.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,275.74 : 192,132.78 = 82,647.02 : x
2. Step 2: Convert to fraction form
   139,275.74/192,132.78 = 82,647.02/x
3. Step 3: Cross multiply
   139,275.74x = 192,132.78 × 82,647.02
4. Step 4: Simplify right side
   139,275.74x = 15,879,201,711.32
5. Step 5: Solve for x
   x = 15,879,201,711.32/139,275.74
6. Step 6: Final answer
   x = 114,012.69