Finding the Fourth Proportional to 111,067.88, 166,527.68 and 61,171.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,067.88 : 166,527.68 = 61,171.60 : x
2. Step 2: Convert to fraction form
   111,067.88/166,527.68 = 61,171.60/x
3. Step 3: Cross multiply
   111,067.88x = 166,527.68 × 61,171.60
4. Step 4: Simplify right side
   111,067.88x = 10,186,764,629.89
5. Step 5: Solve for x
   x = 10,186,764,629.89/111,067.88
6. Step 6: Final answer
   x = 91,716.57