Finding the Fourth Proportional to 209,016.01, 288,442.92 and 113,524.30

Step by Step Solution

1. Step 1: Write the proportion equation
   209,016.01 : 288,442.92 = 113,524.30 : x
2. Step 2: Convert to fraction form
   209,016.01/288,442.92 = 113,524.30/x
3. Step 3: Cross multiply
   209,016.01x = 288,442.92 × 113,524.30
4. Step 4: Simplify right side
   209,016.01x = 32,745,280,582.96
5. Step 5: Solve for x
   x = 32,745,280,582.96/209,016.01
6. Step 6: Final answer
   x = 156,663.98