Finding the Fourth Proportional to 278,978.64, 384,998.04 and 151,662.84

Step by Step Solution

1. Step 1: Write the proportion equation
   278,978.64 : 384,998.04 = 151,662.84 : x
2. Step 2: Convert to fraction form
   278,978.64/384,998.04 = 151,662.84/x
3. Step 3: Cross multiply
   278,978.64x = 384,998.04 × 151,662.84
4. Step 4: Simplify right side
   278,978.64x = 58,389,896,140.83
5. Step 5: Solve for x
   x = 58,389,896,140.83/278,978.64
6. Step 6: Final answer
   x = 209,298.81