Finding the Fourth Proportional to 165,707, 228,676.56 and 90,255.68

Step by Step Solution

1. Step 1: Write the proportion equation
   165,707 : 228,676.56 = 90,255.68 : x
2. Step 2: Convert to fraction form
   165,707/228,676.56 = 90,255.68/x
3. Step 3: Cross multiply
   165,707x = 228,676.56 × 90,255.68
4. Step 4: Simplify right side
   165,707x = 20,639,358,422.86
5. Step 5: Solve for x
   x = 20,639,358,422.86/165,707
6. Step 6: Final answer
   x = 124,553.33