Finding the Fourth Proportional to 111,288.72, 166,858.94 and 57,849.36

Step by Step Solution

1. Step 1: Write the proportion equation
   111,288.72 : 166,858.94 = 57,849.36 : x
2. Step 2: Convert to fraction form
   111,288.72/166,858.94 = 57,849.36/x
3. Step 3: Cross multiply
   111,288.72x = 166,858.94 × 57,849.36
4. Step 4: Simplify right side
   111,288.72x = 9,652,682,889.28
5. Step 5: Solve for x
   x = 9,652,682,889.28/111,288.72
6. Step 6: Final answer
   x = 86,735.50