Finding the Fourth Proportional to 67.05, 100.58 and 56.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67.05 : 100.58 = 56.25 : x
2. Step 2: Convert to fraction form
   67.05/100.58 = 56.25/x
3. Step 3: Cross multiply
   67.05x = 100.58 × 56.25
4. Step 4: Simplify right side
   67.05x = 5,657.34
5. Step 5: Solve for x
   x = 5,657.34/67.05
6. Step 6: Final answer
   x = 84.38