Finding the Fourth Proportional to 116.61, 160.91 and 67.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116.61 : 160.91 = 67.50 : x
2. Step 2: Convert to fraction form
   116.61/160.91 = 67.50/x
3. Step 3: Cross multiply
   116.61x = 160.91 × 67.50
4. Step 4: Simplify right side
   116.61x = 10,861.09
5. Step 5: Solve for x
   x = 10,861.09/116.61
6. Step 6: Final answer
   x = 93.14