Finding the Fourth Proportional to 229,610.40, 344,274.72 and 89,205.12

Step by Step Solution

1. Step 1: Write the proportion equation
   229,610.40 : 344,274.72 = 89,205.12 : x
2. Step 2: Convert to fraction form
   229,610.40/344,274.72 = 89,205.12/x
3. Step 3: Cross multiply
   229,610.40x = 344,274.72 × 89,205.12
4. Step 4: Simplify right side
   229,610.40x = 30,711,067,710.57
5. Step 5: Solve for x
   x = 30,711,067,710.57/229,610.40
6. Step 6: Final answer
   x = 133,752.95