Finding the Fourth Proportional to 372,723, 559,171.98 and 123,405

Step by Step Solution

1. Step 1: Write the proportion equation
   372,723 : 559,171.98 = 123,405 : x
2. Step 2: Convert to fraction form
   372,723/559,171.98 = 123,405/x
3. Step 3: Cross multiply
   372,723x = 559,171.98 × 123,405
4. Step 4: Simplify right side
   372,723x = 69,004,618,191.90
5. Step 5: Solve for x
   x = 69,004,618,191.90/372,723
6. Step 6: Final answer
   x = 185,136.46