Finding the Fourth Proportional to 49,048.55, 67,686.35 and 28,906.28

Step by Step Solution

1. Step 1: Write the proportion equation
   49,048.55 : 67,686.35 = 28,906.28 : x
2. Step 2: Convert to fraction form
   49,048.55/67,686.35 = 28,906.28/x
3. Step 3: Cross multiply
   49,048.55x = 67,686.35 × 28,906.28
4. Step 4: Simplify right side
   49,048.55x = 1,956,560,585.28
5. Step 5: Solve for x
   x = 1,956,560,585.28/49,048.55
6. Step 6: Final answer
   x = 39,890.28