Finding the Fourth Proportional to 139,871.20, 193,023.12 and 83,284.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,871.20 : 193,023.12 = 83,284.96 : x
2. Step 2: Convert to fraction form
   139,871.20/193,023.12 = 83,284.96/x
3. Step 3: Cross multiply
   139,871.20x = 193,023.12 × 83,284.96
4. Step 4: Simplify right side
   139,871.20x = 16,075,922,828.28
5. Step 5: Solve for x
   x = 16,075,922,828.28/139,871.20
6. Step 6: Final answer
   x = 114,933.76