Finding the Fourth Proportional to 209,196.06, 288,692.82 and 113,702.79

Step by Step Solution

1. Step 1: Write the proportion equation
   209,196.06 : 288,692.82 = 113,702.79 : x
2. Step 2: Convert to fraction form
   209,196.06/288,692.82 = 113,702.79/x
3. Step 3: Cross multiply
   209,196.06x = 288,692.82 × 113,702.79
4. Step 4: Simplify right side
   209,196.06x = 32,825,179,086.97
5. Step 5: Solve for x
   x = 32,825,179,086.97/209,196.06
6. Step 6: Final answer
   x = 156,911.08