Finding the Fourth Proportional to 78.52, 117.86 and 44.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78.52 : 117.86 = 44.31 : x
2. Step 2: Convert to fraction form
   78.52/117.86 = 44.31/x
3. Step 3: Cross multiply
   78.52x = 117.86 × 44.31
4. Step 4: Simplify right side
   78.52x = 5,222.10
5. Step 5: Solve for x
   x = 5,222.10/78.52
6. Step 6: Final answer
   x = 66.51