Finding the Fourth Proportional to 372,728.50, 559,180.23 and 123,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   372,728.50 : 559,180.23 = 123,410.50 : x
2. Step 2: Convert to fraction form
   372,728.50/559,180.23 = 123,410.50/x
3. Step 3: Cross multiply
   372,728.50x = 559,180.23 × 123,410.50
4. Step 4: Simplify right side
   372,728.50x = 69,008,711,774.42
5. Step 5: Solve for x
   x = 69,008,711,774.42/372,728.50
6. Step 6: Final answer
   x = 185,144.71