Finding the Fourth Proportional to 410,100.86, 615,151.56 and 140,230.98

Step by Step Solution

1. Step 1: Write the proportion equation
   410,100.86 : 615,151.56 = 140,230.98 : x
2. Step 2: Convert to fraction form
   410,100.86/615,151.56 = 140,230.98/x
3. Step 3: Cross multiply
   410,100.86x = 615,151.56 × 140,230.98
4. Step 4: Simplify right side
   410,100.86x = 86,263,306,107.33
5. Step 5: Solve for x
   x = 86,263,306,107.33/410,100.86
6. Step 6: Final answer
   x = 210,346.56