Finding the Fourth Proportional to 37,087.50, 51,180.78 and 20,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,087.50 : 51,180.78 = 20,320.50 : x
2. Step 2: Convert to fraction form
   37,087.50/51,180.78 = 20,320.50/x
3. Step 3: Cross multiply
   37,087.50x = 51,180.78 × 20,320.50
4. Step 4: Simplify right side
   37,087.50x = 1,040,019,039.99
5. Step 5: Solve for x
   x = 1,040,019,039.99/37,087.50
6. Step 6: Final answer
   x = 28,042.31