Finding the Fourth Proportional to 139,404.42, 192,372.30 and 75,740.58

Step by Step Solution

1. Step 1: Write the proportion equation
   139,404.42 : 192,372.30 = 75,740.58 : x
2. Step 2: Convert to fraction form
   139,404.42/192,372.30 = 75,740.58/x
3. Step 3: Cross multiply
   139,404.42x = 192,372.30 × 75,740.58
4. Step 4: Simplify right side
   139,404.42x = 14,570,389,577.93
5. Step 5: Solve for x
   x = 14,570,389,577.93/139,404.42
6. Step 6: Final answer
   x = 104,518.85