Finding the Fourth Proportional to 139,947.91, 193,120.81 and 79,510.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,947.91 : 193,120.81 = 79,510.16 : x
2. Step 2: Convert to fraction form
   139,947.91/193,120.81 = 79,510.16/x
3. Step 3: Cross multiply
   139,947.91x = 193,120.81 × 79,510.16
4. Step 4: Simplify right side
   139,947.91x = 15,355,066,502.43
5. Step 5: Solve for x
   x = 15,355,066,502.43/139,947.91
6. Step 6: Final answer
   x = 109,719.87