Finding the Fourth Proportional to 91.41, 137.16 and 43.35

Step by Step Solution

1. Step 1: Write the proportion equation
   91.41 : 137.16 = 43.35 : x
2. Step 2: Convert to fraction form
   91.41/137.16 = 43.35/x
3. Step 3: Cross multiply
   91.41x = 137.16 × 43.35
4. Step 4: Simplify right side
   91.41x = 5,945.89
5. Step 5: Solve for x
   x = 5,945.89/91.41
6. Step 6: Final answer
   x = 65.05