Finding the Fourth Proportional to 105,771, 145,964.52 and 57,372.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,771 : 145,964.52 = 57,372.96 : x
2. Step 2: Convert to fraction form
   105,771/145,964.52 = 57,372.96/x
3. Step 3: Cross multiply
   105,771x = 145,964.52 × 57,372.96
4. Step 4: Simplify right side
   105,771x = 8,374,416,567.38
5. Step 5: Solve for x
   x = 8,374,416,567.38/105,771
6. Step 6: Final answer
   x = 79,174.98