Finding the Fourth Proportional to 139,196.80, 192,004 and 82,568

Step by Step Solution

1. Step 1: Write the proportion equation
   139,196.80 : 192,004 = 82,568 : x
2. Step 2: Convert to fraction form
   139,196.80/192,004 = 82,568/x
3. Step 3: Cross multiply
   139,196.80x = 192,004 × 82,568
4. Step 4: Simplify right side
   139,196.80x = 15,853,386,272
5. Step 5: Solve for x
   x = 15,853,386,272/139,196.80
6. Step 6: Final answer
   x = 113,891.89