Finding the Fourth Proportional to 456,443.04, 684,726.84 and 190,141.27

Step by Step Solution

1. Step 1: Write the proportion equation
   456,443.04 : 684,726.84 = 190,141.27 : x
2. Step 2: Convert to fraction form
   456,443.04/684,726.84 = 190,141.27/x
3. Step 3: Cross multiply
   456,443.04x = 684,726.84 × 190,141.27
4. Step 4: Simplify right side
   456,443.04x = 130,194,830,960.69
5. Step 5: Solve for x
   x = 130,194,830,960.69/456,443.04
6. Step 6: Final answer
   x = 285,237.85