Finding the Fourth Proportional to 164,742, 227,344.77 and 89,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,742 : 227,344.77 = 89,290.50 : x
2. Step 2: Convert to fraction form
   164,742/227,344.77 = 89,290.50/x
3. Step 3: Cross multiply
   164,742x = 227,344.77 × 89,290.50
4. Step 4: Simplify right side
   164,742x = 20,299,728,185.69
5. Step 5: Solve for x
   x = 20,299,728,185.69/164,742
6. Step 6: Final answer
   x = 123,221.33