Finding the Fourth Proportional to 142,734.78, 214,101.54 and 42,894.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,734.78 : 214,101.54 = 42,894.54 : x
2. Step 2: Convert to fraction form
   142,734.78/214,101.54 = 42,894.54/x
3. Step 3: Cross multiply
   142,734.78x = 214,101.54 × 42,894.54
4. Step 4: Simplify right side
   142,734.78x = 9,183,787,071.59
5. Step 5: Solve for x
   x = 9,183,787,071.59/142,734.78
6. Step 6: Final answer
   x = 64,341.62