Finding the Fourth Proportional to 426,004.78, 638,868.42 and 141,619.06

Step by Step Solution

1. Step 1: Write the proportion equation
   426,004.78 : 638,868.42 = 141,619.06 : x
2. Step 2: Convert to fraction form
   426,004.78/638,868.42 = 141,619.06/x
3. Step 3: Cross multiply
   426,004.78x = 638,868.42 × 141,619.06
4. Step 4: Simplify right side
   426,004.78x = 90,475,945,104.09
5. Step 5: Solve for x
   x = 90,475,945,104.09/426,004.78
6. Step 6: Final answer
   x = 212,382.46