Finding the Fourth Proportional to 85,109.86, 117,465.83 and 49,321.63

Step by Step Solution

1. Step 1: Write the proportion equation
   85,109.86 : 117,465.83 = 49,321.63 : x
2. Step 2: Convert to fraction form
   85,109.86/117,465.83 = 49,321.63/x
3. Step 3: Cross multiply
   85,109.86x = 117,465.83 × 49,321.63
4. Step 4: Simplify right side
   85,109.86x = 5,793,606,204.90
5. Step 5: Solve for x
   x = 5,793,606,204.90/85,109.86
6. Step 6: Final answer
   x = 68,072.09