Finding the Fourth Proportional to 42,648.33, 63,986.66 and 13,066.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,648.33 : 63,986.66 = 13,066.46 : x
2. Step 2: Convert to fraction form
   42,648.33/63,986.66 = 13,066.46/x
3. Step 3: Cross multiply
   42,648.33x = 63,986.66 × 13,066.46
4. Step 4: Simplify right side
   42,648.33x = 836,079,133.42
5. Step 5: Solve for x
   x = 836,079,133.42/42,648.33
6. Step 6: Final answer
   x = 19,604.03