Finding the Fourth Proportional to 50,664.72, 69,915.96 and 28,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,664.72 : 69,915.96 = 28,308.72 : x
2. Step 2: Convert to fraction form
   50,664.72/69,915.96 = 28,308.72/x
3. Step 3: Cross multiply
   50,664.72x = 69,915.96 × 28,308.72
4. Step 4: Simplify right side
   50,664.72x = 1,979,231,335.17
5. Step 5: Solve for x
   x = 1,979,231,335.17/50,664.72
6. Step 6: Final answer
   x = 39,065.28