Finding the Fourth Proportional to 139,303.28, 192,320.56 and 84,875.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,303.28 : 192,320.56 = 84,875.98 : x
2. Step 2: Convert to fraction form
   139,303.28/192,320.56 = 84,875.98/x
3. Step 3: Cross multiply
   139,303.28x = 192,320.56 × 84,875.98
4. Step 4: Simplify right side
   139,303.28x = 16,323,396,004.15
5. Step 5: Solve for x
   x = 16,323,396,004.15/139,303.28
6. Step 6: Final answer
   x = 117,178.83