Finding the Fourth Proportional to 142,315.52, 213,465.59 and 72,193.01

Step by Step Solution

1. Step 1: Write the proportion equation
   142,315.52 : 213,465.59 = 72,193.01 : x
2. Step 2: Convert to fraction form
   142,315.52/213,465.59 = 72,193.01/x
3. Step 3: Cross multiply
   142,315.52x = 213,465.59 × 72,193.01
4. Step 4: Simplify right side
   142,315.52x = 15,410,723,112.56
5. Step 5: Solve for x
   x = 15,410,723,112.56/142,315.52
6. Step 6: Final answer
   x = 108,285.61