Finding the Fourth Proportional to 42,441.39, 63,672.91 and 19,947.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,441.39 : 63,672.91 = 19,947.71 : x
2. Step 2: Convert to fraction form
   42,441.39/63,672.91 = 19,947.71/x
3. Step 3: Cross multiply
   42,441.39x = 63,672.91 × 19,947.71
4. Step 4: Simplify right side
   42,441.39x = 1,270,128,852.85
5. Step 5: Solve for x
   x = 1,270,128,852.85/42,441.39
6. Step 6: Final answer
   x = 29,926.66