Finding the Fourth Proportional to 116,211.78, 160,350.93 and 78,026.76

Step by Step Solution

1. Step 1: Write the proportion equation
   116,211.78 : 160,350.93 = 78,026.76 : x
2. Step 2: Convert to fraction form
   116,211.78/160,350.93 = 78,026.76/x
3. Step 3: Cross multiply
   116,211.78x = 160,350.93 × 78,026.76
4. Step 4: Simplify right side
   116,211.78x = 12,511,663,530.89
5. Step 5: Solve for x
   x = 12,511,663,530.89/116,211.78
6. Step 6: Final answer
   x = 107,662.61