Finding the Fourth Proportional to 91.52, 127.18 and 90.37

Step by Step Solution

1. Step 1: Write the proportion equation
   91.52 : 127.18 = 90.37 : x
2. Step 2: Convert to fraction form
   91.52/127.18 = 90.37/x
3. Step 3: Cross multiply
   91.52x = 127.18 × 90.37
4. Step 4: Simplify right side
   91.52x = 11,492.71
5. Step 5: Solve for x
   x = 11,492.71/91.52
6. Step 6: Final answer
   x = 125.58