Finding the Fourth Proportional to 397,529.89, 548,588.56 and 225,481.33

Step by Step Solution

1. Step 1: Write the proportion equation
   397,529.89 : 548,588.56 = 225,481.33 : x
2. Step 2: Convert to fraction form
   397,529.89/548,588.56 = 225,481.33/x
3. Step 3: Cross multiply
   397,529.89x = 548,588.56 × 225,481.33
4. Step 4: Simplify right side
   397,529.89x = 123,696,478,131.59
5. Step 5: Solve for x
   x = 123,696,478,131.59/397,529.89
6. Step 6: Final answer
   x = 311,162.71