Finding the Fourth Proportional to 91.86, 126.72 and 60.76

Step by Step Solution

1. Step 1: Write the proportion equation
   91.86 : 126.72 = 60.76 : x
2. Step 2: Convert to fraction form
   91.86/126.72 = 60.76/x
3. Step 3: Cross multiply
   91.86x = 126.72 × 60.76
4. Step 4: Simplify right side
   91.86x = 7,699.51
5. Step 5: Solve for x
   x = 7,699.51/91.86
6. Step 6: Final answer
   x = 83.82