Finding the Fourth Proportional to 30,920.84, 42,670.82 and 16,773.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,920.84 : 42,670.82 = 16,773.72 : x
2. Step 2: Convert to fraction form
   30,920.84/42,670.82 = 16,773.72/x
3. Step 3: Cross multiply
   30,920.84x = 42,670.82 × 16,773.72
4. Step 4: Simplify right side
   30,920.84x = 715,748,386.85
5. Step 5: Solve for x
   x = 715,748,386.85/30,920.84
6. Step 6: Final answer
   x = 23,147.77