Finding the Fourth Proportional to 139,420.27, 192,399.61 and 75,758.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,420.27 : 192,399.61 = 75,758.08 : x
2. Step 2: Convert to fraction form
   139,420.27/192,399.61 = 75,758.08/x
3. Step 3: Cross multiply
   139,420.27x = 192,399.61 × 75,758.08
4. Step 4: Simplify right side
   139,420.27x = 14,575,824,084.35
5. Step 5: Solve for x
   x = 14,575,824,084.35/139,420.27
6. Step 6: Final answer
   x = 104,545.95