Finding the Fourth Proportional to 229,902.72, 317,411.52 and 157,426.90

Step by Step Solution

1. Step 1: Write the proportion equation
   229,902.72 : 317,411.52 = 157,426.90 : x
2. Step 2: Convert to fraction form
   229,902.72/317,411.52 = 157,426.90/x
3. Step 3: Cross multiply
   229,902.72x = 317,411.52 × 157,426.90
4. Step 4: Simplify right side
   229,902.72x = 49,969,111,617.89
5. Step 5: Solve for x
   x = 49,969,111,617.89/229,902.72
6. Step 6: Final answer
   x = 217,348.94