Finding the Fourth Proportional to 165,498.50, 228,391.58 and 90,047

Step by Step Solution

1. Step 1: Write the proportion equation
   165,498.50 : 228,391.58 = 90,047 : x
2. Step 2: Convert to fraction form
   165,498.50/228,391.58 = 90,047/x
3. Step 3: Cross multiply
   165,498.50x = 228,391.58 × 90,047
4. Step 4: Simplify right side
   165,498.50x = 20,565,976,604.26
5. Step 5: Solve for x
   x = 20,565,976,604.26/165,498.50
6. Step 6: Final answer
   x = 124,266.85