Finding the Fourth Proportional to 115,719.86, 173,299.52 and 80,081.34

Step by Step Solution

1. Step 1: Write the proportion equation
   115,719.86 : 173,299.52 = 80,081.34 : x
2. Step 2: Convert to fraction form
   115,719.86/173,299.52 = 80,081.34/x
3. Step 3: Cross multiply
   115,719.86x = 173,299.52 × 80,081.34
4. Step 4: Simplify right side
   115,719.86x = 13,878,057,382.55
5. Step 5: Solve for x
   x = 13,878,057,382.55/115,719.86
6. Step 6: Final answer
   x = 119,928.06