Finding the Fourth Proportional to 123,797.54, 170,841.32 and 72,812.42

Step by Step Solution

1. Step 1: Write the proportion equation
   123,797.54 : 170,841.32 = 72,812.42 : x
2. Step 2: Convert to fraction form
   123,797.54/170,841.32 = 72,812.42/x
3. Step 3: Cross multiply
   123,797.54x = 170,841.32 × 72,812.42
4. Step 4: Simplify right side
   123,797.54x = 12,439,369,945.19
5. Step 5: Solve for x
   x = 12,439,369,945.19/123,797.54
6. Step 6: Final answer
   x = 100,481.56