Finding the Fourth Proportional to 78,581.34, 108,569.16 and 54,814.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,581.34 : 108,569.16 = 54,814.12 : x
2. Step 2: Convert to fraction form
   78,581.34/108,569.16 = 54,814.12/x
3. Step 3: Cross multiply
   78,581.34x = 108,569.16 × 54,814.12
4. Step 4: Simplify right side
   78,581.34x = 5,951,122,693.12
5. Step 5: Solve for x
   x = 5,951,122,693.12/78,581.34
6. Step 6: Final answer
   x = 75,732.01