Finding the Fourth Proportional to 139,243.32, 192,159.81 and 75,585.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,243.32 : 192,159.81 = 75,585.15 : x
2. Step 2: Convert to fraction form
   139,243.32/192,159.81 = 75,585.15/x
3. Step 3: Cross multiply
   139,243.32x = 192,159.81 × 75,585.15
4. Step 4: Simplify right side
   139,243.32x = 14,524,428,062.82
5. Step 5: Solve for x
   x = 14,524,428,062.82/139,243.32
6. Step 6: Final answer
   x = 104,309.69