Finding the Fourth Proportional to 30,727.01, 42,479.40 and 30,446.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,727.01 : 42,479.40 = 30,446.75 : x
2. Step 2: Convert to fraction form
   30,727.01/42,479.40 = 30,446.75/x
3. Step 3: Cross multiply
   30,727.01x = 42,479.40 × 30,446.75
4. Step 4: Simplify right side
   30,727.01x = 1,293,359,671.95
5. Step 5: Solve for x
   x = 1,293,359,671.95/30,727.01
6. Step 6: Final answer
   x = 42,091.95