Finding the Fourth Proportional to 49,128.16, 67,797.96 and 28,989.94

Step by Step Solution

1. Step 1: Write the proportion equation
   49,128.16 : 67,797.96 = 28,989.94 : x
2. Step 2: Convert to fraction form
   49,128.16/67,797.96 = 28,989.94/x
3. Step 3: Cross multiply
   49,128.16x = 67,797.96 × 28,989.94
4. Step 4: Simplify right side
   49,128.16x = 1,965,458,792.52
5. Step 5: Solve for x
   x = 1,965,458,792.52/49,128.16
6. Step 6: Final answer
   x = 40,006.77