Finding the Fourth Proportional to 67.77, 101.83 and 56.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67.77 : 101.83 = 56.98 : x
2. Step 2: Convert to fraction form
   67.77/101.83 = 56.98/x
3. Step 3: Cross multiply
   67.77x = 101.83 × 56.98
4. Step 4: Simplify right side
   67.77x = 5,802.27
5. Step 5: Solve for x
   x = 5,802.27/67.77
6. Step 6: Final answer
   x = 85.62