Finding the Fourth Proportional to 498.56, 747.72 and 156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   498.56 : 747.72 = 156.56 : x
2. Step 2: Convert to fraction form
   498.56/747.72 = 156.56/x
3. Step 3: Cross multiply
   498.56x = 747.72 × 156.56
4. Step 4: Simplify right side
   498.56x = 117,063.04
5. Step 5: Solve for x
   x = 117,063.04/498.56
6. Step 6: Final answer
   x = 234.80