Finding the Fourth Proportional to 31,043.02, 42,842.49 and 18,300.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,043.02 : 42,842.49 = 18,300.25 : x
2. Step 2: Convert to fraction form
   31,043.02/42,842.49 = 18,300.25/x
3. Step 3: Cross multiply
   31,043.02x = 42,842.49 × 18,300.25
4. Step 4: Simplify right side
   31,043.02x = 784,028,537.45
5. Step 5: Solve for x
   x = 784,028,537.45/31,043.02
6. Step 6: Final answer
   x = 25,256.19