Finding the Fourth Proportional to 30,789.10, 42,488.87 and 16,641.94

Step by Step Solution

1. Step 1: Write the proportion equation
   30,789.10 : 42,488.87 = 16,641.94 : x
2. Step 2: Convert to fraction form
   30,789.10/42,488.87 = 16,641.94/x
3. Step 3: Cross multiply
   30,789.10x = 42,488.87 × 16,641.94
4. Step 4: Simplify right side
   30,789.10x = 707,097,225.21
5. Step 5: Solve for x
   x = 707,097,225.21/30,789.10
6. Step 6: Final answer
   x = 22,965.83