Finding the Fourth Proportional to 127.48, 175.82 and 78.34

Step by Step Solution

1. Step 1: Write the proportion equation
   127.48 : 175.82 = 78.34 : x
2. Step 2: Convert to fraction form
   127.48/175.82 = 78.34/x
3. Step 3: Cross multiply
   127.48x = 175.82 × 78.34
4. Step 4: Simplify right side
   127.48x = 13,772.91
5. Step 5: Solve for x
   x = 13,772.91/127.48
6. Step 6: Final answer
   x = 108.04