Finding the Fourth Proportional to 158,760.11, 219,091.53 and 87,146.79

Step by Step Solution

1. Step 1: Write the proportion equation
   158,760.11 : 219,091.53 = 87,146.79 : x
2. Step 2: Convert to fraction form
   158,760.11/219,091.53 = 87,146.79/x
3. Step 3: Cross multiply
   158,760.11x = 219,091.53 × 87,146.79
4. Step 4: Simplify right side
   158,760.11x = 19,093,123,555.69
5. Step 5: Solve for x
   x = 19,093,123,555.69/158,760.11
6. Step 6: Final answer
   x = 120,263.99