Finding the Fourth Proportional to 406,856.79, 610,215.53 and 107,340.46

Step by Step Solution

1. Step 1: Write the proportion equation
   406,856.79 : 610,215.53 = 107,340.46 : x
2. Step 2: Convert to fraction form
   406,856.79/610,215.53 = 107,340.46/x
3. Step 3: Cross multiply
   406,856.79x = 610,215.53 × 107,340.46
4. Step 4: Simplify right side
   406,856.79x = 65,500,813,627.10
5. Step 5: Solve for x
   x = 65,500,813,627.10/406,856.79
6. Step 6: Final answer
   x = 160,992.31