Finding the Fourth Proportional to 164,721, 227,315.18 and 89,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,721 : 227,315.18 = 89,269.50 : x
2. Step 2: Convert to fraction form
   164,721/227,315.18 = 89,269.50/x
3. Step 3: Cross multiply
   164,721x = 227,315.18 × 89,269.50
4. Step 4: Simplify right side
   164,721x = 20,292,312,461.01
5. Step 5: Solve for x
   x = 20,292,312,461.01/164,721
6. Step 6: Final answer
   x = 123,192.02