Finding the Fourth Proportional to 42.05, 62.98 and 30.00

Step by Step Solution

1. Step 1: Write the proportion equation
   42.05 : 62.98 = 30.00 : x
2. Step 2: Convert to fraction form
   42.05/62.98 = 30.00/x
3. Step 3: Cross multiply
   42.05x = 62.98 × 30.00
4. Step 4: Simplify right side
   42.05x = 1,889.56
5. Step 5: Solve for x
   x = 1,889.56/42.05
6. Step 6: Final answer
   x = 44.93