Finding the Fourth Proportional to 50,010.64, 69,021.93 and 28,789.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,010.64 : 69,021.93 = 28,789.72 : x
2. Step 2: Convert to fraction form
   50,010.64/69,021.93 = 28,789.72/x
3. Step 3: Cross multiply
   50,010.64x = 69,021.93 × 28,789.72
4. Step 4: Simplify right side
   50,010.64x = 1,987,122,038.56
5. Step 5: Solve for x
   x = 1,987,122,038.56/50,010.64
6. Step 6: Final answer
   x = 39,733.99