Finding the Fourth Proportional to 69.98, 96.55 and 42.35

Step by Step Solution

1. Step 1: Write the proportion equation
   69.98 : 96.55 = 42.35 : x
2. Step 2: Convert to fraction form
   69.98/96.55 = 42.35/x
3. Step 3: Cross multiply
   69.98x = 96.55 × 42.35
4. Step 4: Simplify right side
   69.98x = 4,088.30
5. Step 5: Solve for x
   x = 4,088.30/69.98
6. Step 6: Final answer
   x = 58.42