Finding the Fourth Proportional to 426,725, 588,880.50 and 238,309

Step by Step Solution

1. Step 1: Write the proportion equation
   426,725 : 588,880.50 = 238,309 : x
2. Step 2: Convert to fraction form
   426,725/588,880.50 = 238,309/x
3. Step 3: Cross multiply
   426,725x = 588,880.50 × 238,309
4. Step 4: Simplify right side
   426,725x = 140,335,523,074.50
5. Step 5: Solve for x
   x = 140,335,523,074.50/426,725
6. Step 6: Final answer
   x = 328,866.42