Finding the Fourth Proportional to 452,898.72, 679,192.56 and 172,496.16

Step by Step Solution

1. Step 1: Write the proportion equation
   452,898.72 : 679,192.56 = 172,496.16 : x
2. Step 2: Convert to fraction form
   452,898.72/679,192.56 = 172,496.16/x
3. Step 3: Cross multiply
   452,898.72x = 679,192.56 × 172,496.16
4. Step 4: Simplify right side
   452,898.72x = 117,158,108,500.57
5. Step 5: Solve for x
   x = 117,158,108,500.57/452,898.72
6. Step 6: Final answer
   x = 258,685.01