Finding the Fourth Proportional to 139,867.09, 193,089.69 and 109,174.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,867.09 : 193,089.69 = 109,174.37 : x
2. Step 2: Convert to fraction form
   139,867.09/193,089.69 = 109,174.37/x
3. Step 3: Cross multiply
   139,867.09x = 193,089.69 × 109,174.37
4. Step 4: Simplify right side
   139,867.09x = 21,080,444,293.80
5. Step 5: Solve for x
   x = 21,080,444,293.80/139,867.09
6. Step 6: Final answer
   x = 150,717.69