Finding the Fourth Proportional to 50,800.82, 70,105.69 and 28,140.15

Step by Step Solution

1. Step 1: Write the proportion equation
   50,800.82 : 70,105.69 = 28,140.15 : x
2. Step 2: Convert to fraction form
   50,800.82/70,105.69 = 28,140.15/x
3. Step 3: Cross multiply
   50,800.82x = 70,105.69 × 28,140.15
4. Step 4: Simplify right side
   50,800.82x = 1,972,784,825.00
5. Step 5: Solve for x
   x = 1,972,784,825.00/50,800.82
6. Step 6: Final answer
   x = 38,833.72