Finding the Fourth Proportional to 42.64, 58.83 and 30.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42.64 : 58.83 = 30.34 : x
2. Step 2: Convert to fraction form
   42.64/58.83 = 30.34/x
3. Step 3: Cross multiply
   42.64x = 58.83 × 30.34
4. Step 4: Simplify right side
   42.64x = 1,784.86
5. Step 5: Solve for x
   x = 1,784.86/42.64
6. Step 6: Final answer
   x = 41.86