Finding the Fourth Proportional to 142,733.31, 213,508.25 and 108,742.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,733.31 : 213,508.25 = 108,742.13 : x
2. Step 2: Convert to fraction form
   142,733.31/213,508.25 = 108,742.13/x
3. Step 3: Cross multiply
   142,733.31x = 213,508.25 × 108,742.13
4. Step 4: Simplify right side
   142,733.31x = 23,217,340,266.32
5. Step 5: Solve for x
   x = 23,217,340,266.32/142,733.31
6. Step 6: Final answer
   x = 162,662.38