Finding the Fourth Proportional to 405,663.52, 559,644.24 and 271,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   405,663.52 : 559,644.24 = 271,570.72 : x
2. Step 2: Convert to fraction form
   405,663.52/559,644.24 = 271,570.72/x
3. Step 3: Cross multiply
   405,663.52x = 559,644.24 × 271,570.72
4. Step 4: Simplify right side
   405,663.52x = 151,982,989,200.65
5. Step 5: Solve for x
   x = 151,982,989,200.65/405,663.52
6. Step 6: Final answer
   x = 374,652.84