Finding the Fourth Proportional to 156.72, 234.72 and 124.05

Step by Step Solution

1. Step 1: Write the proportion equation
   156.72 : 234.72 = 124.05 : x
2. Step 2: Convert to fraction form
   156.72/234.72 = 124.05/x
3. Step 3: Cross multiply
   156.72x = 234.72 × 124.05
4. Step 4: Simplify right side
   156.72x = 29,117.02
5. Step 5: Solve for x
   x = 29,117.02/156.72
6. Step 6: Final answer
   x = 185.79