Finding the Fourth Proportional to 159,279, 219,810.20 and 91,308.86

Step by Step Solution

1. Step 1: Write the proportion equation
   159,279 : 219,810.20 = 91,308.86 : x
2. Step 2: Convert to fraction form
   159,279/219,810.20 = 91,308.86/x
3. Step 3: Cross multiply
   159,279x = 219,810.20 × 91,308.86
4. Step 4: Simplify right side
   159,279x = 20,070,617,222.78
5. Step 5: Solve for x
   x = 20,070,617,222.78/159,279
6. Step 6: Final answer
   x = 126,009.19