Finding the Fourth Proportional to 42,418.83, 63,531.35 and 20,247.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,418.83 : 63,531.35 = 20,247.82 : x
2. Step 2: Convert to fraction form
   42,418.83/63,531.35 = 20,247.82/x
3. Step 3: Cross multiply
   42,418.83x = 63,531.35 × 20,247.82
4. Step 4: Simplify right side
   42,418.83x = 1,286,371,339.16
5. Step 5: Solve for x
   x = 1,286,371,339.16/42,418.83
6. Step 6: Final answer
   x = 30,325.48