Finding the Fourth Proportional to 723,619.46, 998,667.81 and 401,392.41

Step by Step Solution

1. Step 1: Write the proportion equation
   723,619.46 : 998,667.81 = 401,392.41 : x
2. Step 2: Convert to fraction form
   723,619.46/998,667.81 = 401,392.41/x
3. Step 3: Cross multiply
   723,619.46x = 998,667.81 × 401,392.41
4. Step 4: Simplify right side
   723,619.46x = 400,857,679,045.32
5. Step 5: Solve for x
   x = 400,857,679,045.32/723,619.46
6. Step 6: Final answer
   x = 553,961.99