Finding the Fourth Proportional to 42,189.24, 63,292.94 and 12,609.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,189.24 : 63,292.94 = 12,609.48 : x
2. Step 2: Convert to fraction form
   42,189.24/63,292.94 = 12,609.48/x
3. Step 3: Cross multiply
   42,189.24x = 63,292.94 × 12,609.48
4. Step 4: Simplify right side
   42,189.24x = 798,091,061.07
5. Step 5: Solve for x
   x = 798,091,061.07/42,189.24
6. Step 6: Final answer
   x = 18,916.93