Finding the Fourth Proportional to 83.01, 124.69 and 70.82

Step by Step Solution

1. Step 1: Write the proportion equation
   83.01 : 124.69 = 70.82 : x
2. Step 2: Convert to fraction form
   83.01/124.69 = 70.82/x
3. Step 3: Cross multiply
   83.01x = 124.69 × 70.82
4. Step 4: Simplify right side
   83.01x = 8,830.55
5. Step 5: Solve for x
   x = 8,830.55/83.01
6. Step 6: Final answer
   x = 106.38