Finding the Fourth Proportional to 116,265.51, 160,495.16 and 78,590.79

Step by Step Solution

1. Step 1: Write the proportion equation
   116,265.51 : 160,495.16 = 78,590.79 : x
2. Step 2: Convert to fraction form
   116,265.51/160,495.16 = 78,590.79/x
3. Step 3: Cross multiply
   116,265.51x = 160,495.16 × 78,590.79
4. Step 4: Simplify right side
   116,265.51x = 12,613,441,022.62
5. Step 5: Solve for x
   x = 12,613,441,022.62/116,265.51
6. Step 6: Final answer
   x = 108,488.24