Finding the Fourth Proportional to 71.00, 98.00 and 55.43

Step by Step Solution

1. Step 1: Write the proportion equation
   71.00 : 98.00 = 55.43 : x
2. Step 2: Convert to fraction form
   71.00/98.00 = 55.43/x
3. Step 3: Cross multiply
   71.00x = 98.00 × 55.43
4. Step 4: Simplify right side
   71.00x = 5,431.37
5. Step 5: Solve for x
   x = 5,431.37/71.00
6. Step 6: Final answer
   x = 76.50