Finding the Fourth Proportional to 228,915, 343,467 and 123,609.96

Step by Step Solution

1. Step 1: Write the proportion equation
   228,915 : 343,467 = 123,609.96 : x
2. Step 2: Convert to fraction form
   228,915/343,467 = 123,609.96/x
3. Step 3: Cross multiply
   228,915x = 343,467 × 123,609.96
4. Step 4: Simplify right side
   228,915x = 42,455,942,131.32
5. Step 5: Solve for x
   x = 42,455,942,131.32/228,915
6. Step 6: Final answer
   x = 185,465.97