Finding the Fourth Proportional to 50,045.21, 69,087.38 and 28,820.37

Step by Step Solution

1. Step 1: Write the proportion equation
   50,045.21 : 69,087.38 = 28,820.37 : x
2. Step 2: Convert to fraction form
   50,045.21/69,087.38 = 28,820.37/x
3. Step 3: Cross multiply
   50,045.21x = 69,087.38 × 28,820.37
4. Step 4: Simplify right side
   50,045.21x = 1,991,123,709.83
5. Step 5: Solve for x
   x = 1,991,123,709.83/50,045.21
6. Step 6: Final answer
   x = 39,786.50