Finding the Fourth Proportional to 61.29, 91.52 and 55.55

Step by Step Solution

1. Step 1: Write the proportion equation
   61.29 : 91.52 = 55.55 : x
2. Step 2: Convert to fraction form
   61.29/91.52 = 55.55/x
3. Step 3: Cross multiply
   61.29x = 91.52 × 55.55
4. Step 4: Simplify right side
   61.29x = 5,084.10
5. Step 5: Solve for x
   x = 5,084.10/61.29
6. Step 6: Final answer
   x = 82.95