Finding the Fourth Proportional to 117.07, 161.59 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   117.07 : 161.59 = 67.98 : x
2. Step 2: Convert to fraction form
   117.07/161.59 = 67.98/x
3. Step 3: Cross multiply
   117.07x = 161.59 × 67.98
4. Step 4: Simplify right side
   117.07x = 10,984.89
5. Step 5: Solve for x
   x = 10,984.89/117.07
6. Step 6: Final answer
   x = 93.83