Finding the Fourth Proportional to 681,846.96, 1,022,606.42 and 208,536.42

Step by Step Solution

1. Step 1: Write the proportion equation
   681,846.96 : 1,022,606.42 = 208,536.42 : x
2. Step 2: Convert to fraction form
   681,846.96/1,022,606.42 = 208,536.42/x
3. Step 3: Cross multiply
   681,846.96x = 1,022,606.42 × 208,536.42
4. Step 4: Simplify right side
   681,846.96x = 213,250,681,895.82
5. Step 5: Solve for x
   x = 213,250,681,895.82/681,846.96
6. Step 6: Final answer
   x = 312,754.47