Finding the Fourth Proportional to 139,488.80, 209,031.26 and 96,167.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,488.80 : 209,031.26 = 96,167.27 : x
2. Step 2: Convert to fraction form
   139,488.80/209,031.26 = 96,167.27/x
3. Step 3: Cross multiply
   139,488.80x = 209,031.26 × 96,167.27
4. Step 4: Simplify right side
   139,488.80x = 20,101,965,618.86
5. Step 5: Solve for x
   x = 20,101,965,618.86/139,488.80
6. Step 6: Final answer
   x = 144,111.68