Finding the Fourth Proportional to 142,654.17, 213,983.69 and 53,949.45

Step by Step Solution

1. Step 1: Write the proportion equation
   142,654.17 : 213,983.69 = 53,949.45 : x
2. Step 2: Convert to fraction form
   142,654.17/213,983.69 = 53,949.45/x
3. Step 3: Cross multiply
   142,654.17x = 213,983.69 × 53,949.45
4. Step 4: Simplify right side
   142,654.17x = 11,544,302,114.72
5. Step 5: Solve for x
   x = 11,544,302,114.72/142,654.17
6. Step 6: Final answer
   x = 80,925.09