Finding the Fourth Proportional to 139,443.42, 192,433.42 and 75,781.23

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443.42 : 192,433.42 = 75,781.23 : x
2. Step 2: Convert to fraction form
   139,443.42/192,433.42 = 75,781.23/x
3. Step 3: Cross multiply
   139,443.42x = 192,433.42 × 75,781.23
4. Step 4: Simplify right side
   139,443.42x = 14,582,841,260.71
5. Step 5: Solve for x
   x = 14,582,841,260.71/139,443.42
6. Step 6: Final answer
   x = 104,578.91