Finding the Fourth Proportional to 229,066.18, 341,739.33 and 216,665.89

Step by Step Solution

1. Step 1: Write the proportion equation
   229,066.18 : 341,739.33 = 216,665.89 : x
2. Step 2: Convert to fraction form
   229,066.18/341,739.33 = 216,665.89/x
3. Step 3: Cross multiply
   229,066.18x = 341,739.33 × 216,665.89
4. Step 4: Simplify right side
   229,066.18x = 74,043,256,082.45
5. Step 5: Solve for x
   x = 74,043,256,082.45/229,066.18
6. Step 6: Final answer
   x = 323,239.58