Finding the Fourth Proportional to 278,081.98, 417,183.72 and 100,570.48

Step by Step Solution

1. Step 1: Write the proportion equation
   278,081.98 : 417,183.72 = 100,570.48 : x
2. Step 2: Convert to fraction form
   278,081.98/417,183.72 = 100,570.48/x
3. Step 3: Cross multiply
   278,081.98x = 417,183.72 × 100,570.48
4. Step 4: Simplify right side
   278,081.98x = 41,956,366,968.59
5. Step 5: Solve for x
   x = 41,956,366,968.59/278,081.98
6. Step 6: Final answer
   x = 150,877.69