Finding the Fourth Proportional to 139,445.82, 192,436.71 and 75,783.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,445.82 : 192,436.71 = 75,783.60 : x
2. Step 2: Convert to fraction form
   139,445.82/192,436.71 = 75,783.60/x
3. Step 3: Cross multiply
   139,445.82x = 192,436.71 × 75,783.60
4. Step 4: Simplify right side
   139,445.82x = 14,583,546,655.96
5. Step 5: Solve for x
   x = 14,583,546,655.96/139,445.82
6. Step 6: Final answer
   x = 104,582.17