Finding the Fourth Proportional to 42,164.31, 63,239.29 and 14,081.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,164.31 : 63,239.29 = 14,081.18 : x
2. Step 2: Convert to fraction form
   42,164.31/63,239.29 = 14,081.18/x
3. Step 3: Cross multiply
   42,164.31x = 63,239.29 × 14,081.18
4. Step 4: Simplify right side
   42,164.31x = 890,483,825.56
5. Step 5: Solve for x
   x = 890,483,825.56/42,164.31
6. Step 6: Final answer
   x = 21,119.37