Finding the Fourth Proportional to 65,240, 90,038.88 and 38,744

Step by Step Solution

1. Step 1: Write the proportion equation
   65,240 : 90,038.88 = 38,744 : x
2. Step 2: Convert to fraction form
   65,240/90,038.88 = 38,744/x
3. Step 3: Cross multiply
   65,240x = 90,038.88 × 38,744
4. Step 4: Simplify right side
   65,240x = 3,488,466,366.72
5. Step 5: Solve for x
   x = 3,488,466,366.72/65,240
6. Step 6: Final answer
   x = 53,471.28