Finding the Fourth Proportional to 111.83, 154.31 and 70.41

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 154.31 = 70.41 : x
2. Step 2: Convert to fraction form
   111.83/154.31 = 70.41/x
3. Step 3: Cross multiply
   111.83x = 154.31 × 70.41
4. Step 4: Simplify right side
   111.83x = 10,865.19
5. Step 5: Solve for x
   x = 10,865.19/111.83
6. Step 6: Final answer
   x = 97.16