Finding the Fourth Proportional to 568,191.78, 852,066.18 and 213,012

Step by Step Solution

1. Step 1: Write the proportion equation
   568,191.78 : 852,066.18 = 213,012 : x
2. Step 2: Convert to fraction form
   568,191.78/852,066.18 = 213,012/x
3. Step 3: Cross multiply
   568,191.78x = 852,066.18 × 213,012
4. Step 4: Simplify right side
   568,191.78x = 181,500,321,134.16
5. Step 5: Solve for x
   x = 181,500,321,134.16/568,191.78
6. Step 6: Final answer
   x = 319,434.96