Finding the Fourth Proportional to 165,835.50, 228,852.78 and 90,384

Step by Step Solution

1. Step 1: Write the proportion equation
   165,835.50 : 228,852.78 = 90,384 : x
2. Step 2: Convert to fraction form
   165,835.50/228,852.78 = 90,384/x
3. Step 3: Cross multiply
   165,835.50x = 228,852.78 × 90,384
4. Step 4: Simplify right side
   165,835.50x = 20,684,629,667.52
5. Step 5: Solve for x
   x = 20,684,629,667.52/165,835.50
6. Step 6: Final answer
   x = 124,729.81