Finding the Fourth Proportional to 156.02, 233.69 and 131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   156.02 : 233.69 = 131.88 : x
2. Step 2: Convert to fraction form
   156.02/233.69 = 131.88/x
3. Step 3: Cross multiply
   156.02x = 233.69 × 131.88
4. Step 4: Simplify right side
   156.02x = 30,818.38
5. Step 5: Solve for x
   x = 30,818.38/156.02
6. Step 6: Final answer
   x = 197.53