Finding the Fourth Proportional to 142,209.46, 213,430.83 and 72,108.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,209.46 : 213,430.83 = 72,108.82 : x
2. Step 2: Convert to fraction form
   142,209.46/213,430.83 = 72,108.82/x
3. Step 3: Cross multiply
   142,209.46x = 213,430.83 × 72,108.82
4. Step 4: Simplify right side
   142,209.46x = 15,390,245,302.92
5. Step 5: Solve for x
   x = 15,390,245,302.92/142,209.46
6. Step 6: Final answer
   x = 108,222.37