Finding the Fourth Proportional to 139,803.30, 192,933.38 and 79,371.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,803.30 : 192,933.38 = 79,371.93 : x
2. Step 2: Convert to fraction form
   139,803.30/192,933.38 = 79,371.93/x
3. Step 3: Cross multiply
   139,803.30x = 192,933.38 × 79,371.93
4. Step 4: Simplify right side
   139,803.30x = 15,313,494,335.16
5. Step 5: Solve for x
   x = 15,313,494,335.16/139,803.30
6. Step 6: Final answer
   x = 109,536.00