Finding the Fourth Proportional to 72,298.24, 99,776 and 40,469.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,298.24 : 99,776 = 40,469.12 : x
2. Step 2: Convert to fraction form
   72,298.24/99,776 = 40,469.12/x
3. Step 3: Cross multiply
   72,298.24x = 99,776 × 40,469.12
4. Step 4: Simplify right side
   72,298.24x = 4,037,846,917.12
5. Step 5: Solve for x
   x = 4,037,846,917.12/72,298.24
6. Step 6: Final answer
   x = 55,849.86