Finding the Fourth Proportional to 51,389.33, 77,067.57 and 16,320.78

Step by Step Solution

1. Step 1: Write the proportion equation
   51,389.33 : 77,067.57 = 16,320.78 : x
2. Step 2: Convert to fraction form
   51,389.33/77,067.57 = 16,320.78/x
3. Step 3: Cross multiply
   51,389.33x = 77,067.57 × 16,320.78
4. Step 4: Simplify right side
   51,389.33x = 1,257,802,855.10
5. Step 5: Solve for x
   x = 1,257,802,855.10/51,389.33
6. Step 6: Final answer
   x = 24,475.96