Finding the Fourth Proportional to 165,733, 228,711.55 and 90,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   165,733 : 228,711.55 = 90,281.50 : x
2. Step 2: Convert to fraction form
   165,733/228,711.55 = 90,281.50/x
3. Step 3: Cross multiply
   165,733x = 228,711.55 × 90,281.50
4. Step 4: Simplify right side
   165,733x = 20,648,421,801.33
5. Step 5: Solve for x
   x = 20,648,421,801.33/165,733
6. Step 6: Final answer
   x = 124,588.48