Finding the Fourth Proportional to 100.59, 150.81 and 42.84

Step by Step Solution

1. Step 1: Write the proportion equation
   100.59 : 150.81 = 42.84 : x
2. Step 2: Convert to fraction form
   100.59/150.81 = 42.84/x
3. Step 3: Cross multiply
   100.59x = 150.81 × 42.84
4. Step 4: Simplify right side
   100.59x = 6,460.54
5. Step 5: Solve for x
   x = 6,460.54/100.59
6. Step 6: Final answer
   x = 64.23