Finding the Fourth Proportional to 280,172.56, 386,639.04 and 152,850.82

Step by Step Solution

1. Step 1: Write the proportion equation
   280,172.56 : 386,639.04 = 152,850.82 : x
2. Step 2: Convert to fraction form
   280,172.56/386,639.04 = 152,850.82/x
3. Step 3: Cross multiply
   280,172.56x = 386,639.04 × 152,850.82
4. Step 4: Simplify right side
   280,172.56x = 59,098,094,308.01
5. Step 5: Solve for x
   x = 59,098,094,308.01/280,172.56
6. Step 6: Final answer
   x = 210,934.63