Finding the Fourth Proportional to 397,978.57, 596,997.24 and 113,693.17

Step by Step Solution

1. Step 1: Write the proportion equation
   397,978.57 : 596,997.24 = 113,693.17 : x
2. Step 2: Convert to fraction form
   397,978.57/596,997.24 = 113,693.17/x
3. Step 3: Cross multiply
   397,978.57x = 596,997.24 × 113,693.17
4. Step 4: Simplify right side
   397,978.57x = 67,874,507,897.38
5. Step 5: Solve for x
   x = 67,874,507,897.38/397,978.57
6. Step 6: Final answer
   x = 170,548.15