Finding the Fourth Proportional to 90,308.72, 124,620.54 and 50,020.09

Step by Step Solution

1. Step 1: Write the proportion equation
   90,308.72 : 124,620.54 = 50,020.09 : x
2. Step 2: Convert to fraction form
   90,308.72/124,620.54 = 50,020.09/x
3. Step 3: Cross multiply
   90,308.72x = 124,620.54 × 50,020.09
4. Step 4: Simplify right side
   90,308.72x = 6,233,530,626.65
5. Step 5: Solve for x
   x = 6,233,530,626.65/90,308.72
6. Step 6: Final answer
   x = 69,024.68