Finding the Fourth Proportional to 71.67, 99.00 and 53.33

Step by Step Solution

1. Step 1: Write the proportion equation
   71.67 : 99.00 = 53.33 : x
2. Step 2: Convert to fraction form
   71.67/99.00 = 53.33/x
3. Step 3: Cross multiply
   71.67x = 99.00 × 53.33
4. Step 4: Simplify right side
   71.67x = 5,279.86
5. Step 5: Solve for x
   x = 5,279.86/71.67
6. Step 6: Final answer
   x = 73.67