Finding the Fourth Proportional to 67.05, 100.61 and 30.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67.05 : 100.61 = 30.50 : x
2. Step 2: Convert to fraction form
   67.05/100.61 = 30.50/x
3. Step 3: Cross multiply
   67.05x = 100.61 × 30.50
4. Step 4: Simplify right side
   67.05x = 3,068.61
5. Step 5: Solve for x
   x = 3,068.61/67.05
6. Step 6: Final answer
   x = 45.77