Finding the Fourth Proportional to 139,443.55, 192,433.59 and 75,781.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443.55 : 192,433.59 = 75,781.35 : x
2. Step 2: Convert to fraction form
   139,443.55/192,433.59 = 75,781.35/x
3. Step 3: Cross multiply
   139,443.55x = 192,433.59 × 75,781.35
4. Step 4: Simplify right side
   139,443.55x = 14,582,877,235.55
5. Step 5: Solve for x
   x = 14,582,877,235.55/139,443.55
6. Step 6: Final answer
   x = 104,579.07