Finding the Fourth Proportional to 122,757, 169,404.84 and 72,456

Step by Step Solution

1. Step 1: Write the proportion equation
   122,757 : 169,404.84 = 72,456 : x
2. Step 2: Convert to fraction form
   122,757/169,404.84 = 72,456/x
3. Step 3: Cross multiply
   122,757x = 169,404.84 × 72,456
4. Step 4: Simplify right side
   122,757x = 12,274,397,087.04
5. Step 5: Solve for x
   x = 12,274,397,087.04/122,757
6. Step 6: Final answer
   x = 99,989.39