Finding the Fourth Proportional to 72.95, 100.54 and 54.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72.95 : 100.54 = 54.52 : x
2. Step 2: Convert to fraction form
   72.95/100.54 = 54.52/x
3. Step 3: Cross multiply
   72.95x = 100.54 × 54.52
4. Step 4: Simplify right side
   72.95x = 5,481.82
5. Step 5: Solve for x
   x = 5,481.82/72.95
6. Step 6: Final answer
   x = 75.14