Finding the Fourth Proportional to 91,631.58, 137,440.83 and 28,450.17

Step by Step Solution

1. Step 1: Write the proportion equation
   91,631.58 : 137,440.83 = 28,450.17 : x
2. Step 2: Convert to fraction form
   91,631.58/137,440.83 = 28,450.17/x
3. Step 3: Cross multiply
   91,631.58x = 137,440.83 × 28,450.17
4. Step 4: Simplify right side
   91,631.58x = 3,910,214,978.44
5. Step 5: Solve for x
   x = 3,910,214,978.44/91,631.58
6. Step 6: Final answer
   x = 42,673.22