Finding the Fourth Proportional to 116.91, 161.34 and 67.82

Step by Step Solution

1. Step 1: Write the proportion equation
   116.91 : 161.34 = 67.82 : x
2. Step 2: Convert to fraction form
   116.91/161.34 = 67.82/x
3. Step 3: Cross multiply
   116.91x = 161.34 × 67.82
4. Step 4: Simplify right side
   116.91x = 10,941.77
5. Step 5: Solve for x
   x = 10,941.77/116.91
6. Step 6: Final answer
   x = 93.59