Finding the Fourth Proportional to 165,555, 228,466.71 and 90,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   165,555 : 228,466.71 = 90,103.50 : x
2. Step 2: Convert to fraction form
   165,555/228,466.71 = 90,103.50/x
3. Step 3: Cross multiply
   165,555x = 228,466.71 × 90,103.50
4. Step 4: Simplify right side
   165,555x = 20,585,650,204.49
5. Step 5: Solve for x
   x = 20,585,650,204.49/165,555
6. Step 6: Final answer
   x = 124,343.27