Finding the Fourth Proportional to 42,647.33, 63,985.16 and 13,065.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,647.33 : 63,985.16 = 13,065.46 : x
2. Step 2: Convert to fraction form
   42,647.33/63,985.16 = 13,065.46/x
3. Step 3: Cross multiply
   42,647.33x = 63,985.16 × 13,065.46
4. Step 4: Simplify right side
   42,647.33x = 835,995,323.28
5. Step 5: Solve for x
   x = 835,995,323.28/42,647.33
6. Step 6: Final answer
   x = 19,602.52