Finding the Fourth Proportional to 209,286.72, 288,817.72 and 113,795.48

Step by Step Solution

1. Step 1: Write the proportion equation
   209,286.72 : 288,817.72 = 113,795.48 : x
2. Step 2: Convert to fraction form
   209,286.72/288,817.72 = 113,795.48/x
3. Step 3: Cross multiply
   209,286.72x = 288,817.72 × 113,795.48
4. Step 4: Simplify right side
   209,286.72x = 32,866,151,517.46
5. Step 5: Solve for x
   x = 32,866,151,517.46/209,286.72
6. Step 6: Final answer
   x = 157,038.88