Finding the Fourth Proportional to 42,004.34, 63,019.88 and 12,422.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,004.34 : 63,019.88 = 12,422.34 : x
2. Step 2: Convert to fraction form
   42,004.34/63,019.88 = 12,422.34/x
3. Step 3: Cross multiply
   42,004.34x = 63,019.88 × 12,422.34
4. Step 4: Simplify right side
   42,004.34x = 782,854,376.12
5. Step 5: Solve for x
   x = 782,854,376.12/42,004.34
6. Step 6: Final answer
   x = 18,637.46