Finding the Fourth Proportional to 281,468.16, 388,422.72 and 154,141.92

Step by Step Solution

1. Step 1: Write the proportion equation
   281,468.16 : 388,422.72 = 154,141.92 : x
2. Step 2: Convert to fraction form
   281,468.16/388,422.72 = 154,141.92/x
3. Step 3: Cross multiply
   281,468.16x = 388,422.72 × 154,141.92
4. Step 4: Simplify right side
   281,468.16x = 59,872,223,832.42
5. Step 5: Solve for x
   x = 59,872,223,832.42/281,468.16
6. Step 6: Final answer
   x = 212,714.02