Finding the Fourth Proportional to 91.69, 137.53 and 29.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91.69 : 137.53 = 29.15 : x
2. Step 2: Convert to fraction form
   91.69/137.53 = 29.15/x
3. Step 3: Cross multiply
   91.69x = 137.53 × 29.15
4. Step 4: Simplify right side
   91.69x = 4,009.00
5. Step 5: Solve for x
   x = 4,009.00/91.69
6. Step 6: Final answer
   x = 43.72