Finding the Fourth Proportional to 164,857.20, 227,503.20 and 89,405.76

Step by Step Solution

1. Step 1: Write the proportion equation
   164,857.20 : 227,503.20 = 89,405.76 : x
2. Step 2: Convert to fraction form
   164,857.20/227,503.20 = 89,405.76/x
3. Step 3: Cross multiply
   164,857.20x = 227,503.20 × 89,405.76
4. Step 4: Simplify right side
   164,857.20x = 20,340,096,498.43
5. Step 5: Solve for x
   x = 20,340,096,498.43/164,857.20
6. Step 6: Final answer
   x = 123,380.09