Finding the Fourth Proportional to 50,715.56, 69,987.42 and 28,359.56

Step by Step Solution

1. Step 1: Write the proportion equation
   50,715.56 : 69,987.42 = 28,359.56 : x
2. Step 2: Convert to fraction form
   50,715.56/69,987.42 = 28,359.56/x
3. Step 3: Cross multiply
   50,715.56x = 69,987.42 × 28,359.56
4. Step 4: Simplify right side
   50,715.56x = 1,984,812,436.74
5. Step 5: Solve for x
   x = 1,984,812,436.74/50,715.56
6. Step 6: Final answer
   x = 39,136.16