Finding the Fourth Proportional to 72,306.24, 99,787.04 and 40,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,306.24 : 99,787.04 = 40,477.12 : x
2. Step 2: Convert to fraction form
   72,306.24/99,787.04 = 40,477.12/x
3. Step 3: Cross multiply
   72,306.24x = 99,787.04 × 40,477.12
4. Step 4: Simplify right side
   72,306.24x = 4,039,091,992.52
5. Step 5: Solve for x
   x = 4,039,091,992.52/72,306.24
6. Step 6: Final answer
   x = 55,860.90