Finding the Fourth Proportional to 67.30, 100.93 and 53.93

Step by Step Solution

1. Step 1: Write the proportion equation
   67.30 : 100.93 = 53.93 : x
2. Step 2: Convert to fraction form
   67.30/100.93 = 53.93/x
3. Step 3: Cross multiply
   67.30x = 100.93 × 53.93
4. Step 4: Simplify right side
   67.30x = 5,443.15
5. Step 5: Solve for x
   x = 5,443.15/67.30
6. Step 6: Final answer
   x = 80.88