Finding the Fourth Proportional to 61,144.89, 91,717.47 and 16,772.28

Step by Step Solution

1. Step 1: Write the proportion equation
   61,144.89 : 91,717.47 = 16,772.28 : x
2. Step 2: Convert to fraction form
   61,144.89/91,717.47 = 16,772.28/x
3. Step 3: Cross multiply
   61,144.89x = 91,717.47 × 16,772.28
4. Step 4: Simplify right side
   61,144.89x = 1,538,311,087.73
5. Step 5: Solve for x
   x = 1,538,311,087.73/61,144.89
6. Step 6: Final answer
   x = 25,158.46