Finding the Fourth Proportional to 142,104.18, 213,156.30 and 72,003.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,104.18 : 213,156.30 = 72,003.54 : x
2. Step 2: Convert to fraction form
   142,104.18/213,156.30 = 72,003.54/x
3. Step 3: Cross multiply
   142,104.18x = 213,156.30 × 72,003.54
4. Step 4: Simplify right side
   142,104.18x = 15,348,008,173.30
5. Step 5: Solve for x
   x = 15,348,008,173.30/142,104.18
6. Step 6: Final answer
   x = 108,005.33