Finding the Fourth Proportional to 443,997.94, 612,773.27 and 291,164.71

Step by Step Solution

1. Step 1: Write the proportion equation
   443,997.94 : 612,773.27 = 291,164.71 : x
2. Step 2: Convert to fraction form
   443,997.94/612,773.27 = 291,164.71/x
3. Step 3: Cross multiply
   443,997.94x = 612,773.27 × 291,164.71
4. Step 4: Simplify right side
   443,997.94x = 178,417,951,455.30
5. Step 5: Solve for x
   x = 178,417,951,455.30/443,997.94
6. Step 6: Final answer
   x = 401,844.10