Finding the Fourth Proportional to 132,648.50, 198,944.85 and 42,699.25

Step by Step Solution

1. Step 1: Write the proportion equation
   132,648.50 : 198,944.85 = 42,699.25 : x
2. Step 2: Convert to fraction form
   132,648.50/198,944.85 = 42,699.25/x
3. Step 3: Cross multiply
   132,648.50x = 198,944.85 × 42,699.25
4. Step 4: Simplify right side
   132,648.50x = 8,494,796,614.51
5. Step 5: Solve for x
   x = 8,494,796,614.51/132,648.50
6. Step 6: Final answer
   x = 64,039.90