Finding the Fourth Proportional to 91,431.72, 137,150.28 and 32,308.20

Step by Step Solution

1. Step 1: Write the proportion equation
   91,431.72 : 137,150.28 = 32,308.20 : x
2. Step 2: Convert to fraction form
   91,431.72/137,150.28 = 32,308.20/x
3. Step 3: Cross multiply
   91,431.72x = 137,150.28 × 32,308.20
4. Step 4: Simplify right side
   91,431.72x = 4,431,078,676.30
5. Step 5: Solve for x
   x = 4,431,078,676.30/91,431.72
6. Step 6: Final answer
   x = 48,463.25