Finding the Fourth Proportional to 49,116.36, 67,788.77 and 28,978.23

Step by Step Solution

1. Step 1: Write the proportion equation
   49,116.36 : 67,788.77 = 28,978.23 : x
2. Step 2: Convert to fraction form
   49,116.36/67,788.77 = 28,978.23/x
3. Step 3: Cross multiply
   49,116.36x = 67,788.77 × 28,978.23
4. Step 4: Simplify right side
   49,116.36x = 1,964,398,423.59
5. Step 5: Solve for x
   x = 1,964,398,423.59/49,116.36
6. Step 6: Final answer
   x = 39,994.79