Finding the Fourth Proportional to 140.50, 210.71 and 59.34

Step by Step Solution

1. Step 1: Write the proportion equation
   140.50 : 210.71 = 59.34 : x
2. Step 2: Convert to fraction form
   140.50/210.71 = 59.34/x
3. Step 3: Cross multiply
   140.50x = 210.71 × 59.34
4. Step 4: Simplify right side
   140.50x = 12,503.53
5. Step 5: Solve for x
   x = 12,503.53/140.50
6. Step 6: Final answer
   x = 88.99