Finding the Fourth Proportional to 69.98, 104.94 and 42.86

Step by Step Solution

1. Step 1: Write the proportion equation
   69.98 : 104.94 = 42.86 : x
2. Step 2: Convert to fraction form
   69.98/104.94 = 42.86/x
3. Step 3: Cross multiply
   69.98x = 104.94 × 42.86
4. Step 4: Simplify right side
   69.98x = 4,497.73
5. Step 5: Solve for x
   x = 4,497.73/69.98
6. Step 6: Final answer
   x = 64.27