Finding the Fourth Proportional to 278,441.16, 384,246.52 and 151,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   278,441.16 : 384,246.52 = 151,116.78 : x
2. Step 2: Convert to fraction form
   278,441.16/384,246.52 = 151,116.78/x
3. Step 3: Cross multiply
   278,441.16x = 384,246.52 × 151,116.78
4. Step 4: Simplify right side
   278,441.16x = 58,066,096,828.61
5. Step 5: Solve for x
   x = 58,066,096,828.61/278,441.16
6. Step 6: Final answer
   x = 208,539.92