Finding the Fourth Proportional to 673,667.16, 929,658.78 and 371,859

Step by Step Solution

1. Step 1: Write the proportion equation
   673,667.16 : 929,658.78 = 371,859 : x
2. Step 2: Convert to fraction form
   673,667.16/929,658.78 = 371,859/x
3. Step 3: Cross multiply
   673,667.16x = 929,658.78 × 371,859
4. Step 4: Simplify right side
   673,667.16x = 345,701,984,272.02
5. Step 5: Solve for x
   x = 345,701,984,272.02/673,667.16
6. Step 6: Final answer
   x = 513,164.37