Finding the Fourth Proportional to 42,631.62, 63,945.15 and 13,049.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,631.62 : 63,945.15 = 13,049.47 : x
2. Step 2: Convert to fraction form
   42,631.62/63,945.15 = 13,049.47/x
3. Step 3: Cross multiply
   42,631.62x = 63,945.15 × 13,049.47
4. Step 4: Simplify right side
   42,631.62x = 834,450,316.57
5. Step 5: Solve for x
   x = 834,450,316.57/42,631.62
6. Step 6: Final answer
   x = 19,573.51