Finding the Fourth Proportional to 850,300.58, 1,275,524.31 and 219,209.06

Step by Step Solution

1. Step 1: Write the proportion equation
   850,300.58 : 1,275,524.31 = 219,209.06 : x
2. Step 2: Convert to fraction form
   850,300.58/1,275,524.31 = 219,209.06/x
3. Step 3: Cross multiply
   850,300.58x = 1,275,524.31 × 219,209.06
4. Step 4: Simplify right side
   850,300.58x = 279,606,485,002.25
5. Step 5: Solve for x
   x = 279,606,485,002.25/850,300.58
6. Step 6: Final answer
   x = 328,832.52