Finding the Fourth Proportional to 31,080.89, 42,897.18 and 18,333.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,080.89 : 42,897.18 = 18,333.29 : x
2. Step 2: Convert to fraction form
   31,080.89/42,897.18 = 18,333.29/x
3. Step 3: Cross multiply
   31,080.89x = 42,897.18 × 18,333.29
4. Step 4: Simplify right side
   31,080.89x = 786,446,441.12
5. Step 5: Solve for x
   x = 786,446,441.12/31,080.89
6. Step 6: Final answer
   x = 25,303.21