Finding the Fourth Proportional to 102.76, 141.82 and 59.10

Step by Step Solution

1. Step 1: Write the proportion equation
   102.76 : 141.82 = 59.10 : x
2. Step 2: Convert to fraction form
   102.76/141.82 = 59.10/x
3. Step 3: Cross multiply
   102.76x = 141.82 × 59.10
4. Step 4: Simplify right side
   102.76x = 8,381.56
5. Step 5: Solve for x
   x = 8,381.56/102.76
6. Step 6: Final answer
   x = 81.56