Finding the Fourth Proportional to 213,078.86, 294,055.89 and 116,288.01

Step by Step Solution

1. Step 1: Write the proportion equation
   213,078.86 : 294,055.89 = 116,288.01 : x
2. Step 2: Convert to fraction form
   213,078.86/294,055.89 = 116,288.01/x
3. Step 3: Cross multiply
   213,078.86x = 294,055.89 × 116,288.01
4. Step 4: Simplify right side
   213,078.86x = 34,195,173,840.80
5. Step 5: Solve for x
   x = 34,195,173,840.80/213,078.86
6. Step 6: Final answer
   x = 160,481.31