Finding the Fourth Proportional to 49,188.78, 73,786.41 and 14,128.74

Step by Step Solution

1. Step 1: Write the proportion equation
   49,188.78 : 73,786.41 = 14,128.74 : x
2. Step 2: Convert to fraction form
   49,188.78/73,786.41 = 14,128.74/x
3. Step 3: Cross multiply
   49,188.78x = 73,786.41 × 14,128.74
4. Step 4: Simplify right side
   49,188.78x = 1,042,509,002.42
5. Step 5: Solve for x
   x = 1,042,509,002.42/49,188.78
6. Step 6: Final answer
   x = 21,194.04