Finding the Fourth Proportional to 404,728.50, 607,122.72 and 155,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,728.50 : 607,122.72 = 155,410.50 : x
2. Step 2: Convert to fraction form
   404,728.50/607,122.72 = 155,410.50/x
3. Step 3: Cross multiply
   404,728.50x = 607,122.72 × 155,410.50
4. Step 4: Simplify right side
   404,728.50x = 94,353,245,476.56
5. Step 5: Solve for x
   x = 94,353,245,476.56/404,728.50
6. Step 6: Final answer
   x = 233,127.26