Finding the Fourth Proportional to 72,238, 99,692.86 and 40,409.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,238 : 99,692.86 = 40,409.04 : x
2. Step 2: Convert to fraction form
   72,238/99,692.86 = 40,409.04/x
3. Step 3: Cross multiply
   72,238x = 99,692.86 × 40,409.04
4. Step 4: Simplify right side
   72,238x = 4,028,492,767.45
5. Step 5: Solve for x
   x = 4,028,492,767.45/72,238
6. Step 6: Final answer
   x = 55,766.95