Finding the Fourth Proportional to 139,568.36, 209,088.82 and 82,471.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,568.36 : 209,088.82 = 82,471.94 : x
2. Step 2: Convert to fraction form
   139,568.36/209,088.82 = 82,471.94/x
3. Step 3: Cross multiply
   139,568.36x = 209,088.82 × 82,471.94
4. Step 4: Simplify right side
   139,568.36x = 17,243,960,668.53
5. Step 5: Solve for x
   x = 17,243,960,668.53/139,568.36
6. Step 6: Final answer
   x = 123,552.08