Finding the Fourth Proportional to 72,169.82, 99,591.68 and 40,339.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,169.82 : 99,591.68 = 40,339.25 : x
2. Step 2: Convert to fraction form
   72,169.82/99,591.68 = 40,339.25/x
3. Step 3: Cross multiply
   72,169.82x = 99,591.68 × 40,339.25
4. Step 4: Simplify right side
   72,169.82x = 4,017,453,426.89
5. Step 5: Solve for x
   x = 4,017,453,426.89/72,169.82
6. Step 6: Final answer
   x = 55,666.67