Finding the Fourth Proportional to 165,800.50, 228,804.72 and 90,349

Step by Step Solution

1. Step 1: Write the proportion equation
   165,800.50 : 228,804.72 = 90,349 : x
2. Step 2: Convert to fraction form
   165,800.50/228,804.72 = 90,349/x
3. Step 3: Cross multiply
   165,800.50x = 228,804.72 × 90,349
4. Step 4: Simplify right side
   165,800.50x = 20,672,277,647.28
5. Step 5: Solve for x
   x = 20,672,277,647.28/165,800.50
6. Step 6: Final answer
   x = 124,681.64