Finding the Fourth Proportional to 209,453.30, 289,046.82 and 113,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   209,453.30 : 289,046.82 = 113,960.72 : x
2. Step 2: Convert to fraction form
   209,453.30/289,046.82 = 113,960.72/x
3. Step 3: Cross multiply
   209,453.30x = 289,046.82 × 113,960.72
4. Step 4: Simplify right side
   209,453.30x = 32,939,983,720.91
5. Step 5: Solve for x
   x = 32,939,983,720.91/209,453.30
6. Step 6: Final answer
   x = 157,266.48