Finding the Fourth Proportional to 445,796.94, 668,539.89 and 196,342.86

Step by Step Solution

1. Step 1: Write the proportion equation
   445,796.94 : 668,539.89 = 196,342.86 : x
2. Step 2: Convert to fraction form
   445,796.94/668,539.89 = 196,342.86/x
3. Step 3: Cross multiply
   445,796.94x = 668,539.89 × 196,342.86
4. Step 4: Simplify right side
   445,796.94x = 131,263,034,026.69
5. Step 5: Solve for x
   x = 131,263,034,026.69/445,796.94
6. Step 6: Final answer
   x = 294,445.79