Finding the Fourth Proportional to 139,065.59, 208,081.68 and 82,936.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,065.59 : 208,081.68 = 82,936.24 : x
2. Step 2: Convert to fraction form
   139,065.59/208,081.68 = 82,936.24/x
3. Step 3: Cross multiply
   139,065.59x = 208,081.68 × 82,936.24
4. Step 4: Simplify right side
   139,065.59x = 17,257,511,320.87
5. Step 5: Solve for x
   x = 17,257,511,320.87/139,065.59
6. Step 6: Final answer
   x = 124,096.20