Finding the Fourth Proportional to 42,083.13, 63,113.85 and 12,494.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,083.13 : 63,113.85 = 12,494.28 : x
2. Step 2: Convert to fraction form
   42,083.13/63,113.85 = 12,494.28/x
3. Step 3: Cross multiply
   42,083.13x = 63,113.85 × 12,494.28
4. Step 4: Simplify right side
   42,083.13x = 788,562,113.78
5. Step 5: Solve for x
   x = 788,562,113.78/42,083.13
6. Step 6: Final answer
   x = 18,738.20