Finding the Fourth Proportional to 50,147.46, 69,188.67 and 28,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,147.46 : 69,188.67 = 28,636.50 : x
2. Step 2: Convert to fraction form
   50,147.46/69,188.67 = 28,636.50/x
3. Step 3: Cross multiply
   50,147.46x = 69,188.67 × 28,636.50
4. Step 4: Simplify right side
   50,147.46x = 1,981,321,348.46
5. Step 5: Solve for x
   x = 1,981,321,348.46/50,147.46
6. Step 6: Final answer
   x = 39,509.90