Finding the Fourth Proportional to 91.06, 136.71 and 76.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91.06 : 136.71 = 76.03 : x
2. Step 2: Convert to fraction form
   91.06/136.71 = 76.03/x
3. Step 3: Cross multiply
   91.06x = 136.71 × 76.03
4. Step 4: Simplify right side
   91.06x = 10,393.72
5. Step 5: Solve for x
   x = 10,393.72/91.06
6. Step 6: Final answer
   x = 114.14