Finding the Fourth Proportional to 139.57, 209.30 and 62.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139.57 : 209.30 = 62.52 : x
2. Step 2: Convert to fraction form
   139.57/209.30 = 62.52/x
3. Step 3: Cross multiply
   139.57x = 209.30 × 62.52
4. Step 4: Simplify right side
   139.57x = 13,084.69
5. Step 5: Solve for x
   x = 13,084.69/139.57
6. Step 6: Final answer
   x = 93.75