Finding the Fourth Proportional to 100.59, 150.81 and 51.82

Step by Step Solution

1. Step 1: Write the proportion equation
   100.59 : 150.81 = 51.82 : x
2. Step 2: Convert to fraction form
   100.59/150.81 = 51.82/x
3. Step 3: Cross multiply
   100.59x = 150.81 × 51.82
4. Step 4: Simplify right side
   100.59x = 7,814.75
5. Step 5: Solve for x
   x = 7,814.75/100.59
6. Step 6: Final answer
   x = 77.69