Finding the Fourth Proportional to 142,057.86, 212,883.72 and 104,321.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,057.86 : 212,883.72 = 104,321.94 : x
2. Step 2: Convert to fraction form
   142,057.86/212,883.72 = 104,321.94/x
3. Step 3: Cross multiply
   142,057.86x = 212,883.72 × 104,321.94
4. Step 4: Simplify right side
   142,057.86x = 22,208,442,664.82
5. Step 5: Solve for x
   x = 22,208,442,664.82/142,057.86
6. Step 6: Final answer
   x = 156,333.78