Finding the Fourth Proportional to 42,375.35, 63,573.31 and 12,791.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,375.35 : 63,573.31 = 12,791.42 : x
2. Step 2: Convert to fraction form
   42,375.35/63,573.31 = 12,791.42/x
3. Step 3: Cross multiply
   42,375.35x = 63,573.31 × 12,791.42
4. Step 4: Simplify right side
   42,375.35x = 813,192,773.57
5. Step 5: Solve for x
   x = 813,192,773.57/42,375.35
6. Step 6: Final answer
   x = 19,190.23