Finding the Fourth Proportional to 116.94, 175.49 and 78.34

Step by Step Solution

1. Step 1: Write the proportion equation
   116.94 : 175.49 = 78.34 : x
2. Step 2: Convert to fraction form
   116.94/175.49 = 78.34/x
3. Step 3: Cross multiply
   116.94x = 175.49 × 78.34
4. Step 4: Simplify right side
   116.94x = 13,747.89
5. Step 5: Solve for x
   x = 13,747.89/116.94
6. Step 6: Final answer
   x = 117.56