Finding the Fourth Proportional to 42,145.35, 63,230.71 and 12,563.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.35 : 63,230.71 = 12,563.18 : x
2. Step 2: Convert to fraction form
   42,145.35/63,230.71 = 12,563.18/x
3. Step 3: Cross multiply
   42,145.35x = 63,230.71 × 12,563.18
4. Step 4: Simplify right side
   42,145.35x = 794,378,791.26
5. Step 5: Solve for x
   x = 794,378,791.26/42,145.35
6. Step 6: Final answer
   x = 18,848.55