Finding the Fourth Proportional to 42,171.52, 63,247.94 and 12,179.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,171.52 : 63,247.94 = 12,179.25 : x
2. Step 2: Convert to fraction form
   42,171.52/63,247.94 = 12,179.25/x
3. Step 3: Cross multiply
   42,171.52x = 63,247.94 × 12,179.25
4. Step 4: Simplify right side
   42,171.52x = 770,312,096.11
5. Step 5: Solve for x
   x = 770,312,096.11/42,171.52
6. Step 6: Final answer
   x = 18,266.17