Finding the Fourth Proportional to 31,022.53, 42,803.86 and 18,099.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.53 : 42,803.86 = 18,099.79 : x
2. Step 2: Convert to fraction form
   31,022.53/42,803.86 = 18,099.79/x
3. Step 3: Cross multiply
   31,022.53x = 42,803.86 × 18,099.79
4. Step 4: Simplify right side
   31,022.53x = 774,740,877.19
5. Step 5: Solve for x
   x = 774,740,877.19/31,022.53
6. Step 6: Final answer
   x = 24,973.49