Finding the Fourth Proportional to 71,994.78, 107,908.06 and 54,168.16

Step by Step Solution

1. Step 1: Write the proportion equation
   71,994.78 : 107,908.06 = 54,168.16 : x
2. Step 2: Convert to fraction form
   71,994.78/107,908.06 = 54,168.16/x
3. Step 3: Cross multiply
   71,994.78x = 107,908.06 × 54,168.16
4. Step 4: Simplify right side
   71,994.78x = 5,845,181,059.37
5. Step 5: Solve for x
   x = 5,845,181,059.37/71,994.78
6. Step 6: Final answer
   x = 81,188.96