Finding the Fourth Proportional to 139,868.09, 193,091.07 and 109,175.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,868.09 : 193,091.07 = 109,175.37 : x
2. Step 2: Convert to fraction form
   139,868.09/193,091.07 = 109,175.37/x
3. Step 3: Cross multiply
   139,868.09x = 193,091.07 × 109,175.37
4. Step 4: Simplify right side
   139,868.09x = 21,080,789,010.95
5. Step 5: Solve for x
   x = 21,080,789,010.95/139,868.09
6. Step 6: Final answer
   x = 150,719.07