Finding the Fourth Proportional to 72,075.03, 99,468.45 and 40,243.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,075.03 : 99,468.45 = 40,243.25 : x
2. Step 2: Convert to fraction form
   72,075.03/99,468.45 = 40,243.25/x
3. Step 3: Cross multiply
   72,075.03x = 99,468.45 × 40,243.25
4. Step 4: Simplify right side
   72,075.03x = 4,002,933,203.12
5. Step 5: Solve for x
   x = 4,002,933,203.12/72,075.03
6. Step 6: Final answer
   x = 55,538.42