Finding the Fourth Proportional to 298,839.61, 448,325 and 88,493.89

Step by Step Solution

1. Step 1: Write the proportion equation
   298,839.61 : 448,325 = 88,493.89 : x
2. Step 2: Convert to fraction form
   298,839.61/448,325 = 88,493.89/x
3. Step 3: Cross multiply
   298,839.61x = 448,325 × 88,493.89
4. Step 4: Simplify right side
   298,839.61x = 39,674,023,234.25
5. Step 5: Solve for x
   x = 39,674,023,234.25/298,839.61
6. Step 6: Final answer
   x = 132,760.26