Finding the Fourth Proportional to 426,196.89, 588,134.52 and 235,207.80

Step by Step Solution

1. Step 1: Write the proportion equation
   426,196.89 : 588,134.52 = 235,207.80 : x
2. Step 2: Convert to fraction form
   426,196.89/588,134.52 = 235,207.80/x
3. Step 3: Cross multiply
   426,196.89x = 588,134.52 × 235,207.80
4. Step 4: Simplify right side
   426,196.89x = 138,333,826,553.26
5. Step 5: Solve for x
   x = 138,333,826,553.26/426,196.89
6. Step 6: Final answer
   x = 324,577.28