Finding the Fourth Proportional to 156.89, 215.82 and 132.18

Step by Step Solution

1. Step 1: Write the proportion equation
   156.89 : 215.82 = 132.18 : x
2. Step 2: Convert to fraction form
   156.89/215.82 = 132.18/x
3. Step 3: Cross multiply
   156.89x = 215.82 × 132.18
4. Step 4: Simplify right side
   156.89x = 28,527.09
5. Step 5: Solve for x
   x = 28,527.09/156.89
6. Step 6: Final answer
   x = 181.83