Finding the Fourth Proportional to 132,669.09, 199,099.82 and 99,478.53

Step by Step Solution

1. Step 1: Write the proportion equation
   132,669.09 : 199,099.82 = 99,478.53 : x
2. Step 2: Convert to fraction form
   132,669.09/199,099.82 = 99,478.53/x
3. Step 3: Cross multiply
   132,669.09x = 199,099.82 × 99,478.53
4. Step 4: Simplify right side
   132,669.09x = 19,806,157,665.56
5. Step 5: Solve for x
   x = 19,806,157,665.56/132,669.09
6. Step 6: Final answer
   x = 149,289.92