Finding the Fourth Proportional to 50,377.50, 69,521.36 and 28,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,377.50 : 69,521.36 = 28,021.50 : x
2. Step 2: Convert to fraction form
   50,377.50/69,521.36 = 28,021.50/x
3. Step 3: Cross multiply
   50,377.50x = 69,521.36 × 28,021.50
4. Step 4: Simplify right side
   50,377.50x = 1,948,092,649.13
5. Step 5: Solve for x
   x = 1,948,092,649.13/50,377.50
6. Step 6: Final answer
   x = 38,669.90