Finding the Fourth Proportional to 78.32, 108.01 and 53.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78.32 : 108.01 = 53.71 : x
2. Step 2: Convert to fraction form
   78.32/108.01 = 53.71/x
3. Step 3: Cross multiply
   78.32x = 108.01 × 53.71
4. Step 4: Simplify right side
   78.32x = 5,801.22
5. Step 5: Solve for x
   x = 5,801.22/78.32
6. Step 6: Final answer
   x = 74.07