Finding the Fourth Proportional to 91,644.56, 137,488.68 and 32,485.40

Step by Step Solution

1. Step 1: Write the proportion equation
   91,644.56 : 137,488.68 = 32,485.40 : x
2. Step 2: Convert to fraction form
   91,644.56/137,488.68 = 32,485.40/x
3. Step 3: Cross multiply
   91,644.56x = 137,488.68 × 32,485.40
4. Step 4: Simplify right side
   91,644.56x = 4,466,374,765.27
5. Step 5: Solve for x
   x = 4,466,374,765.27/91,644.56
6. Step 6: Final answer
   x = 48,735.84