Finding the Fourth Proportional to 139,895.88, 193,129.38 and 108,782.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,895.88 : 193,129.38 = 108,782.16 : x
2. Step 2: Convert to fraction form
   139,895.88/193,129.38 = 108,782.16/x
3. Step 3: Cross multiply
   139,895.88x = 193,129.38 × 108,782.16
4. Step 4: Simplify right side
   139,895.88x = 21,009,031,115.86
5. Step 5: Solve for x
   x = 21,009,031,115.86/139,895.88
6. Step 6: Final answer
   x = 150,176.20