Finding the Fourth Proportional to 159,168.38, 219,683.55 and 91,230.89

Step by Step Solution

1. Step 1: Write the proportion equation
   159,168.38 : 219,683.55 = 91,230.89 : x
2. Step 2: Convert to fraction form
   159,168.38/219,683.55 = 91,230.89/x
3. Step 3: Cross multiply
   159,168.38x = 219,683.55 × 91,230.89
4. Step 4: Simplify right side
   159,168.38x = 20,041,925,028.56
5. Step 5: Solve for x
   x = 20,041,925,028.56/159,168.38
6. Step 6: Final answer
   x = 125,916.50