Finding the Fourth Proportional to 31,499.60, 43,469.46 and 18,070.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,499.60 : 43,469.46 = 18,070.30 : x
2. Step 2: Convert to fraction form
   31,499.60/43,469.46 = 18,070.30/x
3. Step 3: Cross multiply
   31,499.60x = 43,469.46 × 18,070.30
4. Step 4: Simplify right side
   31,499.60x = 785,506,183.04
5. Step 5: Solve for x
   x = 785,506,183.04/31,499.60
6. Step 6: Final answer
   x = 24,937.02