Finding the Fourth Proportional to 280,113.23, 386,552.88 and 152,786.09

Step by Step Solution

1. Step 1: Write the proportion equation
   280,113.23 : 386,552.88 = 152,786.09 : x
2. Step 2: Convert to fraction form
   280,113.23/386,552.88 = 152,786.09/x
3. Step 3: Cross multiply
   280,113.23x = 386,552.88 × 152,786.09
4. Step 4: Simplify right side
   280,113.23x = 59,059,904,079.82
5. Step 5: Solve for x
   x = 59,059,904,079.82/280,113.23
6. Step 6: Final answer
   x = 210,842.96