Finding the Fourth Proportional to 51,496.47, 71,061.69 and 28,831.65

Step by Step Solution

1. Step 1: Write the proportion equation
   51,496.47 : 71,061.69 = 28,831.65 : x
2. Step 2: Convert to fraction form
   51,496.47/71,061.69 = 28,831.65/x
3. Step 3: Cross multiply
   51,496.47x = 71,061.69 × 28,831.65
4. Step 4: Simplify right side
   51,496.47x = 2,048,825,774.49
5. Step 5: Solve for x
   x = 2,048,825,774.49/51,496.47
6. Step 6: Final answer
   x = 39,785.75