Finding the Fourth Proportional to 142,742.78, 214,113.54 and 42,902.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,742.78 : 214,113.54 = 42,902.54 : x
2. Step 2: Convert to fraction form
   142,742.78/214,113.54 = 42,902.54/x
3. Step 3: Cross multiply
   142,742.78x = 214,113.54 × 42,902.54
4. Step 4: Simplify right side
   142,742.78x = 9,186,014,714.39
5. Step 5: Solve for x
   x = 9,186,014,714.39/142,742.78
6. Step 6: Final answer
   x = 64,353.62