Finding the Fourth Proportional to 139,172.38, 192,057.78 and 75,510.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,172.38 : 192,057.78 = 75,510.02 : x
2. Step 2: Convert to fraction form
   139,172.38/192,057.78 = 75,510.02/x
3. Step 3: Cross multiply
   139,172.38x = 192,057.78 × 75,510.02
4. Step 4: Simplify right side
   139,172.38x = 14,502,287,572.26
5. Step 5: Solve for x
   x = 14,502,287,572.26/139,172.38
6. Step 6: Final answer
   x = 104,203.78