Finding the Fourth Proportional to 428,372.88, 591,139.56 and 237,404.04

Step by Step Solution

1. Step 1: Write the proportion equation
   428,372.88 : 591,139.56 = 237,404.04 : x
2. Step 2: Convert to fraction form
   428,372.88/591,139.56 = 237,404.04/x
3. Step 3: Cross multiply
   428,372.88x = 591,139.56 × 237,404.04
4. Step 4: Simplify right side
   428,372.88x = 140,338,919,747.82
5. Step 5: Solve for x
   x = 140,338,919,747.82/428,372.88
6. Step 6: Final answer
   x = 327,609.25