Finding the Fourth Proportional to 213,111.53, 294,096.31 and 117,618.23

Step by Step Solution

1. Step 1: Write the proportion equation
   213,111.53 : 294,096.31 = 117,618.23 : x
2. Step 2: Convert to fraction form
   213,111.53/294,096.31 = 117,618.23/x
3. Step 3: Cross multiply
   213,111.53x = 294,096.31 × 117,618.23
4. Step 4: Simplify right side
   213,111.53x = 34,591,086,797.54
5. Step 5: Solve for x
   x = 34,591,086,797.54/213,111.53
6. Step 6: Final answer
   x = 162,314.48