Finding the Fourth Proportional to 30,910,920.32, 42,657,680.16 and 16,972,153.49

Step by Step Solution

1. Step 1: Write the proportion equation
   30,910,920.32 : 42,657,680.16 = 16,972,153.49 : x
2. Step 2: Convert to fraction form
   30,910,920.32/42,657,680.16 = 16,972,153.49/x
3. Step 3: Cross multiply
   30,910,920.32x = 42,657,680.16 × 16,972,153.49
4. Step 4: Simplify right side
   30,910,920.32x = 723,992,695,309,491.88
5. Step 5: Solve for x
   x = 723,992,695,309,491.88/30,910,920.32
6. Step 6: Final answer
   x = 23,421,906.81