Finding the Fourth Proportional to 111,757.42, 166,583.30 and 102,789.37

Step by Step Solution

1. Step 1: Write the proportion equation
   111,757.42 : 166,583.30 = 102,789.37 : x
2. Step 2: Convert to fraction form
   111,757.42/166,583.30 = 102,789.37/x
3. Step 3: Cross multiply
   111,757.42x = 166,583.30 × 102,789.37
4. Step 4: Simplify right side
   111,757.42x = 17,122,991,369.63
5. Step 5: Solve for x
   x = 17,122,991,369.63/111,757.42
6. Step 6: Final answer
   x = 153,215.71