Finding the Fourth Proportional to 72,382.53, 99,879.82 and 42,161.53

Step by Step Solution

1. Step 1: Write the proportion equation
   72,382.53 : 99,879.82 = 42,161.53 : x
2. Step 2: Convert to fraction form
   72,382.53/99,879.82 = 42,161.53/x
3. Step 3: Cross multiply
   72,382.53x = 99,879.82 × 42,161.53
4. Step 4: Simplify right side
   72,382.53x = 4,211,085,527.93
5. Step 5: Solve for x
   x = 4,211,085,527.93/72,382.53
6. Step 6: Final answer
   x = 58,178.21