Finding the Fourth Proportional to 208,404.27, 287,609.09 and 117,764.06

Step by Step Solution

1. Step 1: Write the proportion equation
   208,404.27 : 287,609.09 = 117,764.06 : x
2. Step 2: Convert to fraction form
   208,404.27/287,609.09 = 117,764.06/x
3. Step 3: Cross multiply
   208,404.27x = 287,609.09 × 117,764.06
4. Step 4: Simplify right side
   208,404.27x = 33,870,012,104.44
5. Step 5: Solve for x
   x = 33,870,012,104.44/208,404.27
6. Step 6: Final answer
   x = 162,520.72