Finding the Fourth Proportional to 152.55, 210.52 and 82.61

Step by Step Solution

1. Step 1: Write the proportion equation
   152.55 : 210.52 = 82.61 : x
2. Step 2: Convert to fraction form
   152.55/210.52 = 82.61/x
3. Step 3: Cross multiply
   152.55x = 210.52 × 82.61
4. Step 4: Simplify right side
   152.55x = 17,389.83
5. Step 5: Solve for x
   x = 17,389.83/152.55
6. Step 6: Final answer
   x = 114.00