Finding the Fourth Proportional to 413,086.37, 570,115.89 and 231,808.97

Step by Step Solution

1. Step 1: Write the proportion equation
   413,086.37 : 570,115.89 = 231,808.97 : x
2. Step 2: Convert to fraction form
   413,086.37/570,115.89 = 231,808.97/x
3. Step 3: Cross multiply
   413,086.37x = 570,115.89 × 231,808.97
4. Step 4: Simplify right side
   413,086.37x = 132,157,978,666.82
5. Step 5: Solve for x
   x = 132,157,978,666.82/413,086.37
6. Step 6: Final answer
   x = 319,928.20