Finding the Fourth Proportional to 82,578.96, 113,993.82 and 55,757.76

Step by Step Solution

1. Step 1: Write the proportion equation
   82,578.96 : 113,993.82 = 55,757.76 : x
2. Step 2: Convert to fraction form
   82,578.96/113,993.82 = 55,757.76/x
3. Step 3: Cross multiply
   82,578.96x = 113,993.82 × 55,757.76
4. Step 4: Simplify right side
   82,578.96x = 6,356,040,057.04
5. Step 5: Solve for x
   x = 6,356,040,057.04/82,578.96
6. Step 6: Final answer
   x = 76,969.24