Finding the Fourth Proportional to 30,910.78, 42,656.48 and 16,763.46

Step by Step Solution

1. Step 1: Write the proportion equation
   30,910.78 : 42,656.48 = 16,763.46 : x
2. Step 2: Convert to fraction form
   30,910.78/42,656.48 = 16,763.46/x
3. Step 3: Cross multiply
   30,910.78x = 42,656.48 × 16,763.46
4. Step 4: Simplify right side
   30,910.78x = 715,070,196.22
5. Step 5: Solve for x
   x = 715,070,196.22/30,910.78
6. Step 6: Final answer
   x = 23,133.36