Finding the Fourth Proportional to 95.51, 131.82 and 56.72

Step by Step Solution

1. Step 1: Write the proportion equation
   95.51 : 131.82 = 56.72 : x
2. Step 2: Convert to fraction form
   95.51/131.82 = 56.72/x
3. Step 3: Cross multiply
   95.51x = 131.82 × 56.72
4. Step 4: Simplify right side
   95.51x = 7,476.83
5. Step 5: Solve for x
   x = 7,476.83/95.51
6. Step 6: Final answer
   x = 78.28