Finding the Fourth Proportional to 91.86, 126.76 and 59.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91.86 : 126.76 = 59.12 : x
2. Step 2: Convert to fraction form
   91.86/126.76 = 59.12/x
3. Step 3: Cross multiply
   91.86x = 126.76 × 59.12
4. Step 4: Simplify right side
   91.86x = 7,494.20
5. Step 5: Solve for x
   x = 7,494.20/91.86
6. Step 6: Final answer
   x = 81.59