Finding the Fourth Proportional to 259,401.56, 389,142.72 and 109,642.44

Step by Step Solution

1. Step 1: Write the proportion equation
   259,401.56 : 389,142.72 = 109,642.44 : x
2. Step 2: Convert to fraction form
   259,401.56/389,142.72 = 109,642.44/x
3. Step 3: Cross multiply
   259,401.56x = 389,142.72 × 109,642.44
4. Step 4: Simplify right side
   259,401.56x = 42,666,557,329.04
5. Step 5: Solve for x
   x = 42,666,557,329.04/259,401.56
6. Step 6: Final answer
   x = 164,480.73