Finding the Fourth Proportional to 30,691,478.72, 42,354,244.32 and 16,940,446.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,691,478.72 : 42,354,244.32 = 16,940,446.56 : x
2. Step 2: Convert to fraction form
   30,691,478.72/42,354,244.32 = 16,940,446.56/x
3. Step 3: Cross multiply
   30,691,478.72x = 42,354,244.32 × 16,940,446.56
4. Step 4: Simplify right side
   30,691,478.72x = 717,499,812,492,143.50
5. Step 5: Solve for x
   x = 717,499,812,492,143.50/30,691,478.72
6. Step 6: Final answer
   x = 23,377,818.29