Finding the Fourth Proportional to 61.31, 91.94 and 22.78

Step by Step Solution

1. Step 1: Write the proportion equation
   61.31 : 91.94 = 22.78 : x
2. Step 2: Convert to fraction form
   61.31/91.94 = 22.78/x
3. Step 3: Cross multiply
   61.31x = 91.94 × 22.78
4. Step 4: Simplify right side
   61.31x = 2,093.82
5. Step 5: Solve for x
   x = 2,093.82/61.31
6. Step 6: Final answer
   x = 34.15