Finding the Fourth Proportional to 165,796.92, 228,799.71 and 90,345.42

Step by Step Solution

1. Step 1: Write the proportion equation
   165,796.92 : 228,799.71 = 90,345.42 : x
2. Step 2: Convert to fraction form
   165,796.92/228,799.71 = 90,345.42/x
3. Step 3: Cross multiply
   165,796.92x = 228,799.71 × 90,345.42
4. Step 4: Simplify right side
   165,796.92x = 20,671,005,895.83
5. Step 5: Solve for x
   x = 20,671,005,895.83/165,796.92
6. Step 6: Final answer
   x = 124,676.66