Finding the Fourth Proportional to 73.91, 111.41 and 70.82

Step by Step Solution

1. Step 1: Write the proportion equation
   73.91 : 111.41 = 70.82 : x
2. Step 2: Convert to fraction form
   73.91/111.41 = 70.82/x
3. Step 3: Cross multiply
   73.91x = 111.41 × 70.82
4. Step 4: Simplify right side
   73.91x = 7,889.83
5. Step 5: Solve for x
   x = 7,889.83/73.91
6. Step 6: Final answer
   x = 106.75