Finding the Fourth Proportional to 269,976.24, 404,914.55 and 99,160.61

Step by Step Solution

1. Step 1: Write the proportion equation
   269,976.24 : 404,914.55 = 99,160.61 : x
2. Step 2: Convert to fraction form
   269,976.24/404,914.55 = 99,160.61/x
3. Step 3: Cross multiply
   269,976.24x = 404,914.55 × 99,160.61
4. Step 4: Simplify right side
   269,976.24x = 40,151,571,255.50
5. Step 5: Solve for x
   x = 40,151,571,255.50/269,976.24
6. Step 6: Final answer
   x = 148,722.61