Finding the Fourth Proportional to 94.96, 131.72 and 91.60

Step by Step Solution

1. Step 1: Write the proportion equation
   94.96 : 131.72 = 91.60 : x
2. Step 2: Convert to fraction form
   94.96/131.72 = 91.60/x
3. Step 3: Cross multiply
   94.96x = 131.72 × 91.60
4. Step 4: Simplify right side
   94.96x = 12,065.55
5. Step 5: Solve for x
   x = 12,065.55/94.96
6. Step 6: Final answer
   x = 127.06