Finding the Fourth Proportional to 139,472.28, 192,472.20 and 75,810.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,472.28 : 192,472.20 = 75,810.33 : x
2. Step 2: Convert to fraction form
   139,472.28/192,472.20 = 75,810.33/x
3. Step 3: Cross multiply
   139,472.28x = 192,472.20 × 75,810.33
4. Step 4: Simplify right side
   139,472.28x = 14,591,380,997.83
5. Step 5: Solve for x
   x = 14,591,380,997.83/139,472.28
6. Step 6: Final answer
   x = 104,618.50