Finding the Fourth Proportional to 30,696.03, 42,436.00 and 30,415.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,696.03 : 42,436.00 = 30,415.37 : x
2. Step 2: Convert to fraction form
   30,696.03/42,436.00 = 30,415.37/x
3. Step 3: Cross multiply
   30,696.03x = 42,436.00 × 30,415.37
4. Step 4: Simplify right side
   30,696.03x = 1,290,706,467.16
5. Step 5: Solve for x
   x = 1,290,706,467.16/30,696.03
6. Step 6: Final answer
   x = 42,047.99