Finding the Fourth Proportional to 31,079.04, 42,883.16 and 18,336.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,079.04 : 42,883.16 = 18,336.24 : x
2. Step 2: Convert to fraction form
   31,079.04/42,883.16 = 18,336.24/x
3. Step 3: Cross multiply
   31,079.04x = 42,883.16 × 18,336.24
4. Step 4: Simplify right side
   31,079.04x = 786,315,913.72
5. Step 5: Solve for x
   x = 786,315,913.72/31,079.04
6. Step 6: Final answer
   x = 25,300.52