Finding the Fourth Proportional to 42,380.80, 63,573.63 and 12,801.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,380.80 : 63,573.63 = 12,801.63 : x
2. Step 2: Convert to fraction form
   42,380.80/63,573.63 = 12,801.63/x
3. Step 3: Cross multiply
   42,380.80x = 63,573.63 × 12,801.63
4. Step 4: Simplify right side
   42,380.80x = 813,846,089.02
5. Step 5: Solve for x
   x = 813,846,089.02/42,380.80
6. Step 6: Final answer
   x = 19,203.18