Finding the Fourth Proportional to 616,086.72, 924,245.28 and 195,249.60

Step by Step Solution

1. Step 1: Write the proportion equation
   616,086.72 : 924,245.28 = 195,249.60 : x
2. Step 2: Convert to fraction form
   616,086.72/924,245.28 = 195,249.60/x
3. Step 3: Cross multiply
   616,086.72x = 924,245.28 × 195,249.60
4. Step 4: Simplify right side
   616,086.72x = 180,458,521,221.89
5. Step 5: Solve for x
   x = 180,458,521,221.89/616,086.72
6. Step 6: Final answer
   x = 292,910.91