Finding the Fourth Proportional to 259,884.98, 389,882.56 and 82,368.62

Step by Step Solution

1. Step 1: Write the proportion equation
   259,884.98 : 389,882.56 = 82,368.62 : x
2. Step 2: Convert to fraction form
   259,884.98/389,882.56 = 82,368.62/x
3. Step 3: Cross multiply
   259,884.98x = 389,882.56 × 82,368.62
4. Step 4: Simplify right side
   259,884.98x = 32,114,088,429.27
5. Step 5: Solve for x
   x = 32,114,088,429.27/259,884.98
6. Step 6: Final answer
   x = 123,570.39