Finding the Fourth Proportional to 139.55, 209.16 and 62.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139.55 : 209.16 = 62.55 : x
2. Step 2: Convert to fraction form
   139.55/209.16 = 62.55/x
3. Step 3: Cross multiply
   139.55x = 209.16 × 62.55
4. Step 4: Simplify right side
   139.55x = 13,082.96
5. Step 5: Solve for x
   x = 13,082.96/139.55
6. Step 6: Final answer
   x = 93.75