Finding the Fourth Proportional to 67.48, 100.79 and 56.58

Step by Step Solution

1. Step 1: Write the proportion equation
   67.48 : 100.79 = 56.58 : x
2. Step 2: Convert to fraction form
   67.48/100.79 = 56.58/x
3. Step 3: Cross multiply
   67.48x = 100.79 × 56.58
4. Step 4: Simplify right side
   67.48x = 5,702.70
5. Step 5: Solve for x
   x = 5,702.70/67.48
6. Step 6: Final answer
   x = 84.51