Finding the Fourth Proportional to 116,162.77, 160,353.56 and 78,488.05

Step by Step Solution

1. Step 1: Write the proportion equation
   116,162.77 : 160,353.56 = 78,488.05 : x
2. Step 2: Convert to fraction form
   116,162.77/160,353.56 = 78,488.05/x
3. Step 3: Cross multiply
   116,162.77x = 160,353.56 × 78,488.05
4. Step 4: Simplify right side
   116,162.77x = 12,585,838,234.96
5. Step 5: Solve for x
   x = 12,585,838,234.96/116,162.77
6. Step 6: Final answer
   x = 108,346.57