Finding the Fourth Proportional to 83.79, 125.69 and 40.46

Step by Step Solution

1. Step 1: Write the proportion equation
   83.79 : 125.69 = 40.46 : x
2. Step 2: Convert to fraction form
   83.79/125.69 = 40.46/x
3. Step 3: Cross multiply
   83.79x = 125.69 × 40.46
4. Step 4: Simplify right side
   83.79x = 5,084.59
5. Step 5: Solve for x
   x = 5,084.59/83.79
6. Step 6: Final answer
   x = 60.68