Finding the Fourth Proportional to 67.53, 100.71 and 61.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67.53 : 100.71 = 61.05 : x
2. Step 2: Convert to fraction form
   67.53/100.71 = 61.05/x
3. Step 3: Cross multiply
   67.53x = 100.71 × 61.05
4. Step 4: Simplify right side
   67.53x = 6,148.35
5. Step 5: Solve for x
   x = 6,148.35/67.53
6. Step 6: Final answer
   x = 91.05