Finding the Fourth Proportional to 209,196.10, 288,692.37 and 113,702.77

Step by Step Solution

1. Step 1: Write the proportion equation
   209,196.10 : 288,692.37 = 113,702.77 : x
2. Step 2: Convert to fraction form
   209,196.10/288,692.37 = 113,702.77/x
3. Step 3: Cross multiply
   209,196.10x = 288,692.37 × 113,702.77
4. Step 4: Simplify right side
   209,196.10x = 32,825,122,146.86
5. Step 5: Solve for x
   x = 32,825,122,146.86/209,196.10
6. Step 6: Final answer
   x = 156,910.77