Finding the Fourth Proportional to 278,073.27, 417,142.31 and 100,663.83

Step by Step Solution

1. Step 1: Write the proportion equation
   278,073.27 : 417,142.31 = 100,663.83 : x
2. Step 2: Convert to fraction form
   278,073.27/417,142.31 = 100,663.83/x
3. Step 3: Cross multiply
   278,073.27x = 417,142.31 × 100,663.83
4. Step 4: Simplify right side
   278,073.27x = 41,991,142,076.33
5. Step 5: Solve for x
   x = 41,991,142,076.33/278,073.27
6. Step 6: Final answer
   x = 151,007.47