Finding the Fourth Proportional to 154,764.79, 213,663.89 and 118,399.23

Step by Step Solution

1. Step 1: Write the proportion equation
   154,764.79 : 213,663.89 = 118,399.23 : x
2. Step 2: Convert to fraction form
   154,764.79/213,663.89 = 118,399.23/x
3. Step 3: Cross multiply
   154,764.79x = 213,663.89 × 118,399.23
4. Step 4: Simplify right side
   154,764.79x = 25,297,640,350.80
5. Step 5: Solve for x
   x = 25,297,640,350.80/154,764.79
6. Step 6: Final answer
   x = 163,458.63