Finding the Fourth Proportional to 50,709.98, 69,978.30 and 28,049.87

Step by Step Solution

1. Step 1: Write the proportion equation
   50,709.98 : 69,978.30 = 28,049.87 : x
2. Step 2: Convert to fraction form
   50,709.98/69,978.30 = 28,049.87/x
3. Step 3: Cross multiply
   50,709.98x = 69,978.30 × 28,049.87
4. Step 4: Simplify right side
   50,709.98x = 1,962,882,217.82
5. Step 5: Solve for x
   x = 1,962,882,217.82/50,709.98
6. Step 6: Final answer
   x = 38,708.01