Finding the Fourth Proportional to 116,031.31, 173,865.83 and 80,561.81

Step by Step Solution

1. Step 1: Write the proportion equation
   116,031.31 : 173,865.83 = 80,561.81 : x
2. Step 2: Convert to fraction form
   116,031.31/173,865.83 = 80,561.81/x
3. Step 3: Cross multiply
   116,031.31x = 173,865.83 × 80,561.81
4. Step 4: Simplify right side
   116,031.31x = 14,006,945,993.81
5. Step 5: Solve for x
   x = 14,006,945,993.81/116,031.31
6. Step 6: Final answer
   x = 120,716.95