Finding the Fourth Proportional to 139,467.86, 192,558.33 and 107,144.91

Step by Step Solution

1. Step 1: Write the proportion equation
   139,467.86 : 192,558.33 = 107,144.91 : x
2. Step 2: Convert to fraction form
   139,467.86/192,558.33 = 107,144.91/x
3. Step 3: Cross multiply
   139,467.86x = 192,558.33 × 107,144.91
4. Step 4: Simplify right side
   139,467.86x = 20,631,644,937.60
5. Step 5: Solve for x
   x = 20,631,644,937.60/139,467.86
6. Step 6: Final answer
   x = 147,931.18