Finding the Fourth Proportional to 67.19, 100.71 and 61.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67.19 : 100.71 = 61.25 : x
2. Step 2: Convert to fraction form
   67.19/100.71 = 61.25/x
3. Step 3: Cross multiply
   67.19x = 100.71 × 61.25
4. Step 4: Simplify right side
   67.19x = 6,167.98
5. Step 5: Solve for x
   x = 6,167.98/67.19
6. Step 6: Final answer
   x = 91.81