Finding the Fourth Proportional to 72.93, 100.05 and 71.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72.93 : 100.05 = 71.02 : x
2. Step 2: Convert to fraction form
   72.93/100.05 = 71.02/x
3. Step 3: Cross multiply
   72.93x = 100.05 × 71.02
4. Step 4: Simplify right side
   72.93x = 7,105.71
5. Step 5: Solve for x
   x = 7,105.71/72.93
6. Step 6: Final answer
   x = 97.43