Finding the Fourth Proportional to 108,457.06, 162,473.72 and 74,717.12

Step by Step Solution

1. Step 1: Write the proportion equation
   108,457.06 : 162,473.72 = 74,717.12 : x
2. Step 2: Convert to fraction form
   108,457.06/162,473.72 = 74,717.12/x
3. Step 3: Cross multiply
   108,457.06x = 162,473.72 × 74,717.12
4. Step 4: Simplify right side
   108,457.06x = 12,139,568,434.09
5. Step 5: Solve for x
   x = 12,139,568,434.09/108,457.06
6. Step 6: Final answer
   x = 111,929.72