Finding the Fourth Proportional to 50,678.79, 69,933.72 and 28,016.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,678.79 : 69,933.72 = 28,016.42 : x
2. Step 2: Convert to fraction form
   50,678.79/69,933.72 = 28,016.42/x
3. Step 3: Cross multiply
   50,678.79x = 69,933.72 × 28,016.42
4. Step 4: Simplify right side
   50,678.79x = 1,959,292,471.68
5. Step 5: Solve for x
   x = 1,959,292,471.68/50,678.79
6. Step 6: Final answer
   x = 38,661.00