Finding the Fourth Proportional to 83.34, 124.71 and 71.46

Step by Step Solution

1. Step 1: Write the proportion equation
   83.34 : 124.71 = 71.46 : x
2. Step 2: Convert to fraction form
   83.34/124.71 = 71.46/x
3. Step 3: Cross multiply
   83.34x = 124.71 × 71.46
4. Step 4: Simplify right side
   83.34x = 8,911.78
5. Step 5: Solve for x
   x = 8,911.78/83.34
6. Step 6: Final answer
   x = 106.93