Finding the Fourth Proportional to 61,144.39, 91,716.72 and 16,771.78

Step by Step Solution

1. Step 1: Write the proportion equation
   61,144.39 : 91,716.72 = 16,771.78 : x
2. Step 2: Convert to fraction form
   61,144.39/91,716.72 = 16,771.78/x
3. Step 3: Cross multiply
   61,144.39x = 91,716.72 × 16,771.78
4. Step 4: Simplify right side
   61,144.39x = 1,538,252,650.16
5. Step 5: Solve for x
   x = 1,538,252,650.16/61,144.39
6. Step 6: Final answer
   x = 25,157.71