Finding the Fourth Proportional to 91.84, 126.72 and 62.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91.84 : 126.72 = 62.72 : x
2. Step 2: Convert to fraction form
   91.84/126.72 = 62.72/x
3. Step 3: Cross multiply
   91.84x = 126.72 × 62.72
4. Step 4: Simplify right side
   91.84x = 7,947.88
5. Step 5: Solve for x
   x = 7,947.88/91.84
6. Step 6: Final answer
   x = 86.54