Finding the Fourth Proportional to 78.01, 107.76 and 53.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78.01 : 107.76 = 53.41 : x
2. Step 2: Convert to fraction form
   78.01/107.76 = 53.41/x
3. Step 3: Cross multiply
   78.01x = 107.76 × 53.41
4. Step 4: Simplify right side
   78.01x = 5,755.59
5. Step 5: Solve for x
   x = 5,755.59/78.01
6. Step 6: Final answer
   x = 73.78