Finding the Fourth Proportional to 280,141.68, 386,598.30 and 152,819.94

Step by Step Solution

1. Step 1: Write the proportion equation
   280,141.68 : 386,598.30 = 152,819.94 : x
2. Step 2: Convert to fraction form
   280,141.68/386,598.30 = 152,819.94/x
3. Step 3: Cross multiply
   280,141.68x = 386,598.30 × 152,819.94
4. Step 4: Simplify right side
   280,141.68x = 59,079,929,010.10
5. Step 5: Solve for x
   x = 59,079,929,010.10/280,141.68
6. Step 6: Final answer
   x = 210,893.03