Finding the Fourth Proportional to 52,357.40, 72,243.42 and 31,141.88

Step by Step Solution

1. Step 1: Write the proportion equation
   52,357.40 : 72,243.42 = 31,141.88 : x
2. Step 2: Convert to fraction form
   52,357.40/72,243.42 = 31,141.88/x
3. Step 3: Cross multiply
   52,357.40x = 72,243.42 × 31,141.88
4. Step 4: Simplify right side
   52,357.40x = 2,249,795,916.43
5. Step 5: Solve for x
   x = 2,249,795,916.43/52,357.40
6. Step 6: Final answer
   x = 42,969.97