Finding the Fourth Proportional to 72.14, 99.99 and 71.00

Step by Step Solution

1. Step 1: Write the proportion equation
   72.14 : 99.99 = 71.00 : x
2. Step 2: Convert to fraction form
   72.14/99.99 = 71.00/x
3. Step 3: Cross multiply
   72.14x = 99.99 × 71.00
4. Step 4: Simplify right side
   72.14x = 7,099.50
5. Step 5: Solve for x
   x = 7,099.50/72.14
6. Step 6: Final answer
   x = 98.41