Finding the Fourth Proportional to 42,004.86, 63,019.59 and 12,423.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,004.86 : 63,019.59 = 12,423.48 : x
2. Step 2: Convert to fraction form
   42,004.86/63,019.59 = 12,423.48/x
3. Step 3: Cross multiply
   42,004.86x = 63,019.59 × 12,423.48
4. Step 4: Simplify right side
   42,004.86x = 782,922,615.97
5. Step 5: Solve for x
   x = 782,922,615.97/42,004.86
6. Step 6: Final answer
   x = 18,638.86