Finding the Fourth Proportional to 158,551.34, 218,790.06 and 86,916.56

Step by Step Solution

1. Step 1: Write the proportion equation
   158,551.34 : 218,790.06 = 86,916.56 : x
2. Step 2: Convert to fraction form
   158,551.34/218,790.06 = 86,916.56/x
3. Step 3: Cross multiply
   158,551.34x = 218,790.06 × 86,916.56
4. Step 4: Simplify right side
   158,551.34x = 19,016,479,377.39
5. Step 5: Solve for x
   x = 19,016,479,377.39/158,551.34
6. Step 6: Final answer
   x = 119,938.94