Finding the Fourth Proportional to 69.98, 96.57 and 42.34

Step by Step Solution

1. Step 1: Write the proportion equation
   69.98 : 96.57 = 42.34 : x
2. Step 2: Convert to fraction form
   69.98/96.57 = 42.34/x
3. Step 3: Cross multiply
   69.98x = 96.57 × 42.34
4. Step 4: Simplify right side
   69.98x = 4,088.77
5. Step 5: Solve for x
   x = 4,088.77/69.98
6. Step 6: Final answer
   x = 58.43