Finding the Fourth Proportional to 112,911.10, 155,806.09 and 65,179.83

Step by Step Solution

1. Step 1: Write the proportion equation
   112,911.10 : 155,806.09 = 65,179.83 : x
2. Step 2: Convert to fraction form
   112,911.10/155,806.09 = 65,179.83/x
3. Step 3: Cross multiply
   112,911.10x = 155,806.09 × 65,179.83
4. Step 4: Simplify right side
   112,911.10x = 10,155,414,459.16
5. Step 5: Solve for x
   x = 10,155,414,459.16/112,911.10
6. Step 6: Final answer
   x = 89,941.68