Finding the Fourth Proportional to 139,150.91, 192,028.82 and 75,489.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,150.91 : 192,028.82 = 75,489.16 : x
2. Step 2: Convert to fraction form
   139,150.91/192,028.82 = 75,489.16/x
3. Step 3: Cross multiply
   139,150.91x = 192,028.82 × 75,489.16
4. Step 4: Simplify right side
   139,150.91x = 14,496,094,317.59
5. Step 5: Solve for x
   x = 14,496,094,317.59/139,150.91
6. Step 6: Final answer
   x = 104,175.35