Finding the Fourth Proportional to 50,687.30, 69,953.59 and 28,028.03

Step by Step Solution

1. Step 1: Write the proportion equation
   50,687.30 : 69,953.59 = 28,028.03 : x
2. Step 2: Convert to fraction form
   50,687.30/69,953.59 = 28,028.03/x
3. Step 3: Cross multiply
   50,687.30x = 69,953.59 × 28,028.03
4. Step 4: Simplify right side
   50,687.30x = 1,960,661,004.39
5. Step 5: Solve for x
   x = 1,960,661,004.39/50,687.30
6. Step 6: Final answer
   x = 38,681.50