Finding the Fourth Proportional to 67.09, 100.63 and 19.00

Step by Step Solution

1. Step 1: Write the proportion equation
   67.09 : 100.63 = 19.00 : x
2. Step 2: Convert to fraction form
   67.09/100.63 = 19.00/x
3. Step 3: Cross multiply
   67.09x = 100.63 × 19.00
4. Step 4: Simplify right side
   67.09x = 1,911.55
5. Step 5: Solve for x
   x = 1,911.55/67.09
6. Step 6: Final answer
   x = 28.49