Finding the Fourth Proportional to 209,144.73, 288,621.32 and 113,651.94

Step by Step Solution

1. Step 1: Write the proportion equation
   209,144.73 : 288,621.32 = 113,651.94 : x
2. Step 2: Convert to fraction form
   209,144.73/288,621.32 = 113,651.94/x
3. Step 3: Cross multiply
   209,144.73x = 288,621.32 × 113,651.94
4. Step 4: Simplify right side
   209,144.73x = 32,802,372,375.10
5. Step 5: Solve for x
   x = 32,802,372,375.10/209,144.73
6. Step 6: Final answer
   x = 156,840.54