Finding the Fourth Proportional to 278,164.58, 417,062.52 and 100,648.49

Step by Step Solution

1. Step 1: Write the proportion equation
   278,164.58 : 417,062.52 = 100,648.49 : x
2. Step 2: Convert to fraction form
   278,164.58/417,062.52 = 100,648.49/x
3. Step 3: Cross multiply
   278,164.58x = 417,062.52 × 100,648.49
4. Step 4: Simplify right side
   278,164.58x = 41,976,710,788.28
5. Step 5: Solve for x
   x = 41,976,710,788.28/278,164.58
6. Step 6: Final answer
   x = 150,906.03