Finding the Fourth Proportional to 123,797.55, 170,841.32 and 72,812.43

Step by Step Solution

1. Step 1: Write the proportion equation
   123,797.55 : 170,841.32 = 72,812.43 : x
2. Step 2: Convert to fraction form
   123,797.55/170,841.32 = 72,812.43/x
3. Step 3: Cross multiply
   123,797.55x = 170,841.32 × 72,812.43
4. Step 4: Simplify right side
   123,797.55x = 12,439,371,653.61
5. Step 5: Solve for x
   x = 12,439,371,653.61/123,797.55
6. Step 6: Final answer
   x = 100,481.57