Finding the Fourth Proportional to 269,499.88, 404,290.18 and 87,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   269,499.88 : 404,290.18 = 87,069.72 : x
2. Step 2: Convert to fraction form
   269,499.88/404,290.18 = 87,069.72/x
3. Step 3: Cross multiply
   269,499.88x = 404,290.18 × 87,069.72
4. Step 4: Simplify right side
   269,499.88x = 35,201,432,771.35
5. Step 5: Solve for x
   x = 35,201,432,771.35/269,499.88
6. Step 6: Final answer
   x = 130,617.62