Finding the Fourth Proportional to 42,001.34, 63,015.38 and 12,419.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,001.34 : 63,015.38 = 12,419.34 : x
2. Step 2: Convert to fraction form
   42,001.34/63,015.38 = 12,419.34/x
3. Step 3: Cross multiply
   42,001.34x = 63,015.38 × 12,419.34
4. Step 4: Simplify right side
   42,001.34x = 782,609,429.45
5. Step 5: Solve for x
   x = 782,609,429.45/42,001.34
6. Step 6: Final answer
   x = 18,632.96