Finding the Fourth Proportional to 83.69, 115.59 and 73.29

Step by Step Solution

1. Step 1: Write the proportion equation
   83.69 : 115.59 = 73.29 : x
2. Step 2: Convert to fraction form
   83.69/115.59 = 73.29/x
3. Step 3: Cross multiply
   83.69x = 115.59 × 73.29
4. Step 4: Simplify right side
   83.69x = 8,471.59
5. Step 5: Solve for x
   x = 8,471.59/83.69
6. Step 6: Final answer
   x = 101.23