Finding the Fourth Proportional to 30,485.54, 42,071.67 and 17,055.99

Step by Step Solution

1. Step 1: Write the proportion equation
   30,485.54 : 42,071.67 = 17,055.99 : x
2. Step 2: Convert to fraction form
   30,485.54/42,071.67 = 17,055.99/x
3. Step 3: Cross multiply
   30,485.54x = 42,071.67 × 17,055.99
4. Step 4: Simplify right side
   30,485.54x = 717,573,982.80
5. Step 5: Solve for x
   x = 717,573,982.80/30,485.54
6. Step 6: Final answer
   x = 23,538.18