Finding the Fourth Proportional to 113.17, 169.83 and 61.83

Step by Step Solution

1. Step 1: Write the proportion equation
   113.17 : 169.83 = 61.83 : x
2. Step 2: Convert to fraction form
   113.17/169.83 = 61.83/x
3. Step 3: Cross multiply
   113.17x = 169.83 × 61.83
4. Step 4: Simplify right side
   113.17x = 10,500.59
5. Step 5: Solve for x
   x = 10,500.59/113.17
6. Step 6: Final answer
   x = 92.79