Finding the Fourth Proportional to 31,238.91, 46,809.16 and 17,178.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,238.91 : 46,809.16 = 17,178.05 : x
2. Step 2: Convert to fraction form
   31,238.91/46,809.16 = 17,178.05/x
3. Step 3: Cross multiply
   31,238.91x = 46,809.16 × 17,178.05
4. Step 4: Simplify right side
   31,238.91x = 804,090,165.02
5. Step 5: Solve for x
   x = 804,090,165.02/31,238.91
6. Step 6: Final answer
   x = 25,740.02