Finding the Fourth Proportional to 42,470.04, 63,680.45 and 14,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,470.04 : 63,680.45 = 14,380.72 : x
2. Step 2: Convert to fraction form
   42,470.04/63,680.45 = 14,380.72/x
3. Step 3: Cross multiply
   42,470.04x = 63,680.45 × 14,380.72
4. Step 4: Simplify right side
   42,470.04x = 915,770,720.92
5. Step 5: Solve for x
   x = 915,770,720.92/42,470.04
6. Step 6: Final answer
   x = 21,562.75