Finding the Fourth Proportional to 139,648.24, 192,347.47 and 107,321.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,648.24 : 192,347.47 = 107,321.01 : x
2. Step 2: Convert to fraction form
   139,648.24/192,347.47 = 107,321.01/x
3. Step 3: Cross multiply
   139,648.24x = 192,347.47 × 107,321.01
4. Step 4: Simplify right side
   139,648.24x = 20,642,924,164.19
5. Step 5: Solve for x
   x = 20,642,924,164.19/139,648.24
6. Step 6: Final answer
   x = 147,820.87