Finding the Fourth Proportional to 30,478.21, 42,068.39 and 17,733.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.21 : 42,068.39 = 17,733.86 : x
2. Step 2: Convert to fraction form
   30,478.21/42,068.39 = 17,733.86/x
3. Step 3: Cross multiply
   30,478.21x = 42,068.39 × 17,733.86
4. Step 4: Simplify right side
   30,478.21x = 746,034,639.67
5. Step 5: Solve for x
   x = 746,034,639.67/30,478.21
6. Step 6: Final answer
   x = 24,477.64