Finding the Fourth Proportional to 139,223.71, 192,128.84 and 75,561.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,223.71 : 192,128.84 = 75,561.49 : x
2. Step 2: Convert to fraction form
   139,223.71/192,128.84 = 75,561.49/x
3. Step 3: Cross multiply
   139,223.71x = 192,128.84 × 75,561.49
4. Step 4: Simplify right side
   139,223.71x = 14,517,541,422.37
5. Step 5: Solve for x
   x = 14,517,541,422.37/139,223.71
6. Step 6: Final answer
   x = 104,274.92