Finding the Fourth Proportional to 49,911.74, 68,879.71 and 28,404.57

Step by Step Solution

1. Step 1: Write the proportion equation
   49,911.74 : 68,879.71 = 28,404.57 : x
2. Step 2: Convert to fraction form
   49,911.74/68,879.71 = 28,404.57/x
3. Step 3: Cross multiply
   49,911.74x = 68,879.71 × 28,404.57
4. Step 4: Simplify right side
   49,911.74x = 1,956,498,402.25
5. Step 5: Solve for x
   x = 1,956,498,402.25/49,911.74
6. Step 6: Final answer
   x = 39,199.16