Finding the Fourth Proportional to 83.56, 124.72 and 75.46

Step by Step Solution

1. Step 1: Write the proportion equation
   83.56 : 124.72 = 75.46 : x
2. Step 2: Convert to fraction form
   83.56/124.72 = 75.46/x
3. Step 3: Cross multiply
   83.56x = 124.72 × 75.46
4. Step 4: Simplify right side
   83.56x = 9,411.37
5. Step 5: Solve for x
   x = 9,411.37/83.56
6. Step 6: Final answer
   x = 112.63