Finding the Fourth Proportional to 50,099.76, 69,137.56 and 28,878.88

Step by Step Solution

1. Step 1: Write the proportion equation
   50,099.76 : 69,137.56 = 28,878.88 : x
2. Step 2: Convert to fraction form
   50,099.76/69,137.56 = 28,878.88/x
3. Step 3: Cross multiply
   50,099.76x = 69,137.56 × 28,878.88
4. Step 4: Simplify right side
   50,099.76x = 1,996,615,298.73
5. Step 5: Solve for x
   x = 1,996,615,298.73/50,099.76
6. Step 6: Final answer
   x = 39,852.79