Finding the Fourth Proportional to 106.52, 146.72 and 91.94

Step by Step Solution

1. Step 1: Write the proportion equation
   106.52 : 146.72 = 91.94 : x
2. Step 2: Convert to fraction form
   106.52/146.72 = 91.94/x
3. Step 3: Cross multiply
   106.52x = 146.72 × 91.94
4. Step 4: Simplify right side
   106.52x = 13,488.98
5. Step 5: Solve for x
   x = 13,488.98/106.52
6. Step 6: Final answer
   x = 126.63