Finding the Fourth Proportional to 116,302.72, 160,558.72 and 78,262.29

Step by Step Solution

1. Step 1: Write the proportion equation
   116,302.72 : 160,558.72 = 78,262.29 : x
2. Step 2: Convert to fraction form
   116,302.72/160,558.72 = 78,262.29/x
3. Step 3: Cross multiply
   116,302.72x = 160,558.72 × 78,262.29
4. Step 4: Simplify right side
   116,302.72x = 12,565,691,912.56
5. Step 5: Solve for x
   x = 12,565,691,912.56/116,302.72
6. Step 6: Final answer
   x = 108,042.98