Finding the Fourth Proportional to 61.19, 91.71 and 34.10

Step by Step Solution

1. Step 1: Write the proportion equation
   61.19 : 91.71 = 34.10 : x
2. Step 2: Convert to fraction form
   61.19/91.71 = 34.10/x
3. Step 3: Cross multiply
   61.19x = 91.71 × 34.10
4. Step 4: Simplify right side
   61.19x = 3,127.31
5. Step 5: Solve for x
   x = 3,127.31/61.19
6. Step 6: Final answer
   x = 51.11