Finding the Fourth Proportional to 71.01, 106.89 and 54.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71.01 : 106.89 = 54.10 : x
2. Step 2: Convert to fraction form
   71.01/106.89 = 54.10/x
3. Step 3: Cross multiply
   71.01x = 106.89 × 54.10
4. Step 4: Simplify right side
   71.01x = 5,782.68
5. Step 5: Solve for x
   x = 5,782.68/71.01
6. Step 6: Final answer
   x = 81.43