Finding the Fourth Proportional to 30,985,260.69, 42,758,801.23 and 16,855,978.71

Step by Step Solution

1. Step 1: Write the proportion equation
   30,985,260.69 : 42,758,801.23 = 16,855,978.71 : x
2. Step 2: Convert to fraction form
   30,985,260.69/42,758,801.23 = 16,855,978.71/x
3. Step 3: Cross multiply
   30,985,260.69x = 42,758,801.23 × 16,855,978.71
4. Step 4: Simplify right side
   30,985,260.69x = 720,741,442,899,927.88
5. Step 5: Solve for x
   x = 720,741,442,899,927.88/30,985,260.69
6. Step 6: Final answer
   x = 23,260,783.58