Finding the Fourth Proportional to 723,111.30, 997,965.16 and 400,883.68

Step by Step Solution

1. Step 1: Write the proportion equation
   723,111.30 : 997,965.16 = 400,883.68 : x
2. Step 2: Convert to fraction form
   723,111.30/997,965.16 = 400,883.68/x
3. Step 3: Cross multiply
   723,111.30x = 997,965.16 × 400,883.68
4. Step 4: Simplify right side
   723,111.30x = 400,067,946,097.84
5. Step 5: Solve for x
   x = 400,067,946,097.84/723,111.30
6. Step 6: Final answer
   x = 553,259.15