Finding the Fourth Proportional to 111.41, 153.76 and 67.77

Step by Step Solution

1. Step 1: Write the proportion equation
   111.41 : 153.76 = 67.77 : x
2. Step 2: Convert to fraction form
   111.41/153.76 = 67.77/x
3. Step 3: Cross multiply
   111.41x = 153.76 × 67.77
4. Step 4: Simplify right side
   111.41x = 10,420.32
5. Step 5: Solve for x
   x = 10,420.32/111.41
6. Step 6: Final answer
   x = 93.53