Finding the Fourth Proportional to 73.15, 100.79 and 54.71

Step by Step Solution

1. Step 1: Write the proportion equation
   73.15 : 100.79 = 54.71 : x
2. Step 2: Convert to fraction form
   73.15/100.79 = 54.71/x
3. Step 3: Cross multiply
   73.15x = 100.79 × 54.71
4. Step 4: Simplify right side
   73.15x = 5,513.72
5. Step 5: Solve for x
   x = 5,513.72/73.15
6. Step 6: Final answer
   x = 75.38