Finding the Fourth Proportional to 67.86, 101.37 and 58.18

Step by Step Solution

1. Step 1: Write the proportion equation
   67.86 : 101.37 = 58.18 : x
2. Step 2: Convert to fraction form
   67.86/101.37 = 58.18/x
3. Step 3: Cross multiply
   67.86x = 101.37 × 58.18
4. Step 4: Simplify right side
   67.86x = 5,897.71
5. Step 5: Solve for x
   x = 5,897.71/67.86
6. Step 6: Final answer
   x = 86.91