Finding the Fourth Proportional to 30,920.87, 42,670.91 and 16,773.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,920.87 : 42,670.91 = 16,773.82 : x
2. Step 2: Convert to fraction form
   30,920.87/42,670.91 = 16,773.82/x
3. Step 3: Cross multiply
   30,920.87x = 42,670.91 × 16,773.82
4. Step 4: Simplify right side
   30,920.87x = 715,754,098.83
5. Step 5: Solve for x
   x = 715,754,098.83/30,920.87
6. Step 6: Final answer
   x = 23,147.93