Finding the Fourth Proportional to 67,825.92, 101,738.56 and 21,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,825.92 : 101,738.56 = 21,078.72 : x
2. Step 2: Convert to fraction form
   67,825.92/101,738.56 = 21,078.72/x
3. Step 3: Cross multiply
   67,825.92x = 101,738.56 × 21,078.72
4. Step 4: Simplify right side
   67,825.92x = 2,144,518,619.44
5. Step 5: Solve for x
   x = 2,144,518,619.44/67,825.92
6. Step 6: Final answer
   x = 31,617.98