Finding the Fourth Proportional to 42,645.71, 63,976.77 and 13,063.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,645.71 : 63,976.77 = 13,063.82 : x
2. Step 2: Convert to fraction form
   42,645.71/63,976.77 = 13,063.82/x
3. Step 3: Cross multiply
   42,645.71x = 63,976.77 × 13,063.82
4. Step 4: Simplify right side
   42,645.71x = 835,780,687.58
5. Step 5: Solve for x
   x = 835,780,687.58/42,645.71
6. Step 6: Final answer
   x = 19,598.23