Finding the Fourth Proportional to 116,264.26, 160,493.43 and 78,589.54

Step by Step Solution

1. Step 1: Write the proportion equation
   116,264.26 : 160,493.43 = 78,589.54 : x
2. Step 2: Convert to fraction form
   116,264.26/160,493.43 = 78,589.54/x
3. Step 3: Cross multiply
   116,264.26x = 160,493.43 × 78,589.54
4. Step 4: Simplify right side
   116,264.26x = 12,613,104,836.72
5. Step 5: Solve for x
   x = 12,613,104,836.72/116,264.26
6. Step 6: Final answer
   x = 108,486.52