Finding the Fourth Proportional to 139,209, 192,108.56 and 75,546.81

Step by Step Solution

1. Step 1: Write the proportion equation
   139,209 : 192,108.56 = 75,546.81 : x
2. Step 2: Convert to fraction form
   139,209/192,108.56 = 75,546.81/x
3. Step 3: Cross multiply
   139,209x = 192,108.56 × 75,546.81
4. Step 4: Simplify right side
   139,209x = 14,513,188,503.96
5. Step 5: Solve for x
   x = 14,513,188,503.96/139,209
6. Step 6: Final answer
   x = 104,254.67