Finding the Fourth Proportional to 278,899.56, 384,870.56 and 151,572.42

Step by Step Solution

1. Step 1: Write the proportion equation
   278,899.56 : 384,870.56 = 151,572.42 : x
2. Step 2: Convert to fraction form
   278,899.56/384,870.56 = 151,572.42/x
3. Step 3: Cross multiply
   278,899.56x = 384,870.56 × 151,572.42
4. Step 4: Simplify right side
   278,899.56x = 58,335,761,408.09
5. Step 5: Solve for x
   x = 58,335,761,408.09/278,899.56
6. Step 6: Final answer
   x = 209,164.05