Finding the Fourth Proportional to 67.64, 100.98 and 58.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67.64 : 100.98 = 58.50 : x
2. Step 2: Convert to fraction form
   67.64/100.98 = 58.50/x
3. Step 3: Cross multiply
   67.64x = 100.98 × 58.50
4. Step 4: Simplify right side
   67.64x = 5,907.33
5. Step 5: Solve for x
   x = 5,907.33/67.64
6. Step 6: Final answer
   x = 87.34