Finding the Fourth Proportional to 111,440.92, 166,003.13 and 105,404.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,440.92 : 166,003.13 = 105,404.68 : x
2. Step 2: Convert to fraction form
   111,440.92/166,003.13 = 105,404.68/x
3. Step 3: Cross multiply
   111,440.92x = 166,003.13 × 105,404.68
4. Step 4: Simplify right side
   111,440.92x = 17,497,506,796.65
5. Step 5: Solve for x
   x = 17,497,506,796.65/111,440.92
6. Step 6: Final answer
   x = 157,011.51