Finding the Fourth Proportional to 105,899.64, 146,143.18 and 57,501.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,899.64 : 146,143.18 = 57,501.54 : x
2. Step 2: Convert to fraction form
   105,899.64/146,143.18 = 57,501.54/x
3. Step 3: Cross multiply
   105,899.64x = 146,143.18 × 57,501.54
4. Step 4: Simplify right side
   105,899.64x = 8,403,456,892.27
5. Step 5: Solve for x
   x = 8,403,456,892.27/105,899.64
6. Step 6: Final answer
   x = 79,353.03