Finding the Fourth Proportional to 280,093.58, 386,528.91 and 152,768.78

Step by Step Solution

1. Step 1: Write the proportion equation
   280,093.58 : 386,528.91 = 152,768.78 : x
2. Step 2: Convert to fraction form
   280,093.58/386,528.91 = 152,768.78/x
3. Step 3: Cross multiply
   280,093.58x = 386,528.91 × 152,768.78
4. Step 4: Simplify right side
   280,093.58x = 59,049,550,015.43
5. Step 5: Solve for x
   x = 59,049,550,015.43/280,093.58
6. Step 6: Final answer
   x = 210,820.79