Finding the Fourth Proportional to 426,100.60, 639,224.71 and 189,461.73

Step by Step Solution

1. Step 1: Write the proportion equation
   426,100.60 : 639,224.71 = 189,461.73 : x
2. Step 2: Convert to fraction form
   426,100.60/639,224.71 = 189,461.73/x
3. Step 3: Cross multiply
   426,100.60x = 639,224.71 × 189,461.73
4. Step 4: Simplify right side
   426,100.60x = 121,108,622,404.51
5. Step 5: Solve for x
   x = 121,108,622,404.51/426,100.60
6. Step 6: Final answer
   x = 284,225.42