Finding the Fourth Proportional to 111,018.10, 166,469.55 and 40,861.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,018.10 : 166,469.55 = 40,861.30 : x
2. Step 2: Convert to fraction form
   111,018.10/166,469.55 = 40,861.30/x
3. Step 3: Cross multiply
   111,018.10x = 166,469.55 × 40,861.30
4. Step 4: Simplify right side
   111,018.10x = 6,802,162,223.42
5. Step 5: Solve for x
   x = 6,802,162,223.42/111,018.10
6. Step 6: Final answer
   x = 61,270.75