Finding the Fourth Proportional to 67.50, 100.74 and 58.86

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 100.74 = 58.86 : x
2. Step 2: Convert to fraction form
   67.50/100.74 = 58.86/x
3. Step 3: Cross multiply
   67.50x = 100.74 × 58.86
4. Step 4: Simplify right side
   67.50x = 5,929.56
5. Step 5: Solve for x
   x = 5,929.56/67.50
6. Step 6: Final answer
   x = 87.85