Finding the Fourth Proportional to 42,039.57, 63,027.77 and 19,840.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,039.57 : 63,027.77 = 19,840.31 : x
2. Step 2: Convert to fraction form
   42,039.57/63,027.77 = 19,840.31/x
3. Step 3: Cross multiply
   42,039.57x = 63,027.77 × 19,840.31
4. Step 4: Simplify right side
   42,039.57x = 1,250,490,081.07
5. Step 5: Solve for x
   x = 1,250,490,081.07/42,039.57
6. Step 6: Final answer
   x = 29,745.55