Finding the Fourth Proportional to 42,127.35, 63,042.31 and 39,729.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,127.35 : 63,042.31 = 39,729.48 : x
2. Step 2: Convert to fraction form
   42,127.35/63,042.31 = 39,729.48/x
3. Step 3: Cross multiply
   42,127.35x = 63,042.31 × 39,729.48
4. Step 4: Simplify right side
   42,127.35x = 2,504,638,194.30
5. Step 5: Solve for x
   x = 2,504,638,194.30/42,127.35
6. Step 6: Final answer
   x = 59,453.97