Finding the Fourth Proportional to 108,817.44, 150,230.55 and 72,509.31

Step by Step Solution

1. Step 1: Write the proportion equation
   108,817.44 : 150,230.55 = 72,509.31 : x
2. Step 2: Convert to fraction form
   108,817.44/150,230.55 = 72,509.31/x
3. Step 3: Cross multiply
   108,817.44x = 150,230.55 × 72,509.31
4. Step 4: Simplify right side
   108,817.44x = 10,893,113,521.42
5. Step 5: Solve for x
   x = 10,893,113,521.42/108,817.44
6. Step 6: Final answer
   x = 100,104.48