Finding the Fourth Proportional to 281,470.17, 388,429.43 and 152,410.05

Step by Step Solution

1. Step 1: Write the proportion equation
   281,470.17 : 388,429.43 = 152,410.05 : x
2. Step 2: Convert to fraction form
   281,470.17/388,429.43 = 152,410.05/x
3. Step 3: Cross multiply
   281,470.17x = 388,429.43 × 152,410.05
4. Step 4: Simplify right side
   281,470.17x = 59,200,548,847.77
5. Step 5: Solve for x
   x = 59,200,548,847.77/281,470.17
6. Step 6: Final answer
   x = 210,326.19