Finding the Fourth Proportional to 229,868.72, 317,216.76 and 129,264.56

Step by Step Solution

1. Step 1: Write the proportion equation
   229,868.72 : 317,216.76 = 129,264.56 : x
2. Step 2: Convert to fraction form
   229,868.72/317,216.76 = 129,264.56/x
3. Step 3: Cross multiply
   229,868.72x = 317,216.76 × 129,264.56
4. Step 4: Simplify right side
   229,868.72x = 41,004,884,906.03
5. Step 5: Solve for x
   x = 41,004,884,906.03/229,868.72
6. Step 6: Final answer
   x = 178,383.93