Finding the Fourth Proportional to 704,978.04, 1,057,462.02 and 172,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   704,978.04 : 1,057,462.02 = 172,506.72 : x
2. Step 2: Convert to fraction form
   704,978.04/1,057,462.02 = 172,506.72/x
3. Step 3: Cross multiply
   704,978.04x = 1,057,462.02 × 172,506.72
4. Step 4: Simplify right side
   704,978.04x = 182,419,304,594.77
5. Step 5: Solve for x
   x = 182,419,304,594.77/704,978.04
6. Step 6: Final answer
   x = 258,758.85