Finding the Fourth Proportional to 278,390.45, 384,179.86 and 151,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   278,390.45 : 384,179.86 = 151,066.05 : x
2. Step 2: Convert to fraction form
   278,390.45/384,179.86 = 151,066.05/x
3. Step 3: Cross multiply
   278,390.45x = 384,179.86 × 151,066.05
4. Step 4: Simplify right side
   278,390.45x = 58,036,532,687.91
5. Step 5: Solve for x
   x = 58,036,532,687.91/278,390.45
6. Step 6: Final answer
   x = 208,471.71