Finding the Fourth Proportional to 50,320.85, 69,441.28 and 28,809.89

Step by Step Solution

1. Step 1: Write the proportion equation
   50,320.85 : 69,441.28 = 28,809.89 : x
2. Step 2: Convert to fraction form
   50,320.85/69,441.28 = 28,809.89/x
3. Step 3: Cross multiply
   50,320.85x = 69,441.28 × 28,809.89
4. Step 4: Simplify right side
   50,320.85x = 2,000,595,219.03
5. Step 5: Solve for x
   x = 2,000,595,219.03/50,320.85
6. Step 6: Final answer
   x = 39,756.78