Finding the Fourth Proportional to 156.76, 216.72 and 149.96

Step by Step Solution

1. Step 1: Write the proportion equation
   156.76 : 216.72 = 149.96 : x
2. Step 2: Convert to fraction form
   156.76/216.72 = 149.96/x
3. Step 3: Cross multiply
   156.76x = 216.72 × 149.96
4. Step 4: Simplify right side
   156.76x = 32,499.33
5. Step 5: Solve for x
   x = 32,499.33/156.76
6. Step 6: Final answer
   x = 207.32