Finding the Fourth Proportional to 123,722.96, 170,727.26 and 72,737.37

Step by Step Solution

1. Step 1: Write the proportion equation
   123,722.96 : 170,727.26 = 72,737.37 : x
2. Step 2: Convert to fraction form
   123,722.96/170,727.26 = 72,737.37/x
3. Step 3: Cross multiply
   123,722.96x = 170,727.26 × 72,737.37
4. Step 4: Simplify right side
   123,722.96x = 12,418,251,516.02
5. Step 5: Solve for x
   x = 12,418,251,516.02/123,722.96
6. Step 6: Final answer
   x = 100,371.44