Finding the Fourth Proportional to 53,949.71, 74,457.31 and 30,986.72

Step by Step Solution

1. Step 1: Write the proportion equation
   53,949.71 : 74,457.31 = 30,986.72 : x
2. Step 2: Convert to fraction form
   53,949.71/74,457.31 = 30,986.72/x
3. Step 3: Cross multiply
   53,949.71x = 74,457.31 × 30,986.72
4. Step 4: Simplify right side
   53,949.71x = 2,307,187,646.38
5. Step 5: Solve for x
   x = 2,307,187,646.38/53,949.71
6. Step 6: Final answer
   x = 42,765.53