Finding the Fourth Proportional to 397,171.56, 595,422.72 and 172,362.72

Step by Step Solution

1. Step 1: Write the proportion equation
   397,171.56 : 595,422.72 = 172,362.72 : x
2. Step 2: Convert to fraction form
   397,171.56/595,422.72 = 172,362.72/x
3. Step 3: Cross multiply
   397,171.56x = 595,422.72 × 172,362.72
4. Step 4: Simplify right side
   397,171.56x = 102,628,679,569.00
5. Step 5: Solve for x
   x = 102,628,679,569.00/397,171.56
6. Step 6: Final answer
   x = 258,398.86