Finding the Fourth Proportional to 72,075.92, 99,463.84 and 40,245.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,075.92 : 99,463.84 = 40,245.36 : x
2. Step 2: Convert to fraction form
   72,075.92/99,463.84 = 40,245.36/x
3. Step 3: Cross multiply
   72,075.92x = 99,463.84 × 40,245.36
4. Step 4: Simplify right side
   72,075.92x = 4,002,958,047.78
5. Step 5: Solve for x
   x = 4,002,958,047.78/72,075.92
6. Step 6: Final answer
   x = 55,538.08