Finding the Fourth Proportional to 85,399.29, 128,105.42 and 23,069.25

Step by Step Solution

1. Step 1: Write the proportion equation
   85,399.29 : 128,105.42 = 23,069.25 : x
2. Step 2: Convert to fraction form
   85,399.29/128,105.42 = 23,069.25/x
3. Step 3: Cross multiply
   85,399.29x = 128,105.42 × 23,069.25
4. Step 4: Simplify right side
   85,399.29x = 2,955,295,844.99
5. Step 5: Solve for x
   x = 2,955,295,844.99/85,399.29
6. Step 6: Final answer
   x = 34,605.63