Finding the Fourth Proportional to 116,159.99, 160,349.82 and 78,485.27

Step by Step Solution

1. Step 1: Write the proportion equation
   116,159.99 : 160,349.82 = 78,485.27 : x
2. Step 2: Convert to fraction form
   116,159.99/160,349.82 = 78,485.27/x
3. Step 3: Cross multiply
   116,159.99x = 160,349.82 × 78,485.27
4. Step 4: Simplify right side
   116,159.99x = 12,585,098,917.15
5. Step 5: Solve for x
   x = 12,585,098,917.15/116,159.99
6. Step 6: Final answer
   x = 108,342.80