Finding the Fourth Proportional to 111,519.45, 153,684.18 and 109,469.61

Step by Step Solution

1. Step 1: Write the proportion equation
   111,519.45 : 153,684.18 = 109,469.61 : x
2. Step 2: Convert to fraction form
   111,519.45/153,684.18 = 109,469.61/x
3. Step 3: Cross multiply
   111,519.45x = 153,684.18 × 109,469.61
4. Step 4: Simplify right side
   111,519.45x = 16,823,747,247.77
5. Step 5: Solve for x
   x = 16,823,747,247.77/111,519.45
6. Step 6: Final answer
   x = 150,859.31