Finding the Fourth Proportional to 39,615.25, 59,348.71 and 19,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,615.25 : 59,348.71 = 19,870.69 : x
2. Step 2: Convert to fraction form
   39,615.25/59,348.71 = 19,870.69/x
3. Step 3: Cross multiply
   39,615.25x = 59,348.71 × 19,870.69
4. Step 4: Simplify right side
   39,615.25x = 1,179,299,818.31
5. Step 5: Solve for x
   x = 1,179,299,818.31/39,615.25
6. Step 6: Final answer
   x = 29,768.83