Finding the Fourth Proportional to 42,662.61, 63,972.83 and 13,073.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,662.61 : 63,972.83 = 13,073.31 : x
2. Step 2: Convert to fraction form
   42,662.61/63,972.83 = 13,073.31/x
3. Step 3: Cross multiply
   42,662.61x = 63,972.83 × 13,073.31
4. Step 4: Simplify right side
   42,662.61x = 836,336,572.80
5. Step 5: Solve for x
   x = 836,336,572.80/42,662.61
6. Step 6: Final answer
   x = 19,603.50