Finding the Fourth Proportional to 111,012.14, 166,542.78 and 51,815.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,012.14 : 166,542.78 = 51,815.48 : x
2. Step 2: Convert to fraction form
   111,012.14/166,542.78 = 51,815.48/x
3. Step 3: Cross multiply
   111,012.14x = 166,542.78 × 51,815.48
4. Step 4: Simplify right side
   111,012.14x = 8,629,494,086.23
5. Step 5: Solve for x
   x = 8,629,494,086.23/111,012.14
6. Step 6: Final answer
   x = 77,734.69