Finding the Fourth Proportional to 72,068.92, 108,105.81 and 19,478.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,068.92 : 108,105.81 = 19,478.86 : x
2. Step 2: Convert to fraction form
   72,068.92/108,105.81 = 19,478.86/x
3. Step 3: Cross multiply
   72,068.92x = 108,105.81 × 19,478.86
4. Step 4: Simplify right side
   72,068.92x = 2,105,777,938.18
5. Step 5: Solve for x
   x = 2,105,777,938.18/72,068.92
6. Step 6: Final answer
   x = 29,218.95