Finding the Fourth Proportional to 30,820.30, 42,531.87 and 16,673.02

Step by Step Solution

1. Step 1: Write the proportion equation
   30,820.30 : 42,531.87 = 16,673.02 : x
2. Step 2: Convert to fraction form
   30,820.30/42,531.87 = 16,673.02/x
3. Step 3: Cross multiply
   30,820.30x = 42,531.87 × 16,673.02
4. Step 4: Simplify right side
   30,820.30x = 709,134,719.15
5. Step 5: Solve for x
   x = 709,134,719.15/30,820.30
6. Step 6: Final answer
   x = 23,008.69