Finding the Fourth Proportional to 139,449.47, 192,441.42 and 75,787.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,449.47 : 192,441.42 = 75,787.25 : x
2. Step 2: Convert to fraction form
   139,449.47/192,441.42 = 75,787.25/x
3. Step 3: Cross multiply
   139,449.47x = 192,441.42 × 75,787.25
4. Step 4: Simplify right side
   139,449.47x = 14,584,605,045.69
5. Step 5: Solve for x
   x = 14,584,605,045.69/139,449.47
6. Step 6: Final answer
   x = 104,587.03