Finding the Fourth Proportional to 316,782.72, 437,160.17 and 189,458.31

Step by Step Solution

1. Step 1: Write the proportion equation
   316,782.72 : 437,160.17 = 189,458.31 : x
2. Step 2: Convert to fraction form
   316,782.72/437,160.17 = 189,458.31/x
3. Step 3: Cross multiply
   316,782.72x = 437,160.17 × 189,458.31
4. Step 4: Simplify right side
   316,782.72x = 82,823,627,007.51
5. Step 5: Solve for x
   x = 82,823,627,007.51/316,782.72
6. Step 6: Final answer
   x = 261,452.48