Finding the Fourth Proportional to 30,932.06, 42,686.35 and 16,784.90

Step by Step Solution

1. Step 1: Write the proportion equation
   30,932.06 : 42,686.35 = 16,784.90 : x
2. Step 2: Convert to fraction form
   30,932.06/42,686.35 = 16,784.90/x
3. Step 3: Cross multiply
   30,932.06x = 42,686.35 × 16,784.90
4. Step 4: Simplify right side
   30,932.06x = 716,486,222.83
5. Step 5: Solve for x
   x = 716,486,222.83/30,932.06
6. Step 6: Final answer
   x = 23,163.23