Finding the Fourth Proportional to 42,376.35, 63,574.81 and 12,792.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,376.35 : 63,574.81 = 12,792.42 : x
2. Step 2: Convert to fraction form
   42,376.35/63,574.81 = 12,792.42/x
3. Step 3: Cross multiply
   42,376.35x = 63,574.81 × 12,792.42
4. Step 4: Simplify right side
   42,376.35x = 813,275,670.94
5. Step 5: Solve for x
   x = 813,275,670.94/42,376.35
6. Step 6: Final answer
   x = 19,191.73