Finding the Fourth Proportional to 42,626.16, 63,948.38 and 13,042.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,626.16 : 63,948.38 = 13,042.98 : x
2. Step 2: Convert to fraction form
   42,626.16/63,948.38 = 13,042.98/x
3. Step 3: Cross multiply
   42,626.16x = 63,948.38 × 13,042.98
4. Step 4: Simplify right side
   42,626.16x = 834,077,376.16
5. Step 5: Solve for x
   x = 834,077,376.16/42,626.16
6. Step 6: Final answer
   x = 19,567.27