Finding the Fourth Proportional to 83.61, 124.43 and 83.34

Step by Step Solution

1. Step 1: Write the proportion equation
   83.61 : 124.43 = 83.34 : x
2. Step 2: Convert to fraction form
   83.61/124.43 = 83.34/x
3. Step 3: Cross multiply
   83.61x = 124.43 × 83.34
4. Step 4: Simplify right side
   83.61x = 10,369.58
5. Step 5: Solve for x
   x = 10,369.58/83.61
6. Step 6: Final answer
   x = 124.02