Finding the Fourth Proportional to 50,679.57, 69,937.89 and 28,323.57

Step by Step Solution

1. Step 1: Write the proportion equation
   50,679.57 : 69,937.89 = 28,323.57 : x
2. Step 2: Convert to fraction form
   50,679.57/69,937.89 = 28,323.57/x
3. Step 3: Cross multiply
   50,679.57x = 69,937.89 × 28,323.57
4. Step 4: Simplify right side
   50,679.57x = 1,980,890,723.07
5. Step 5: Solve for x
   x = 1,980,890,723.07/50,679.57
6. Step 6: Final answer
   x = 39,086.57