Finding the Fourth Proportional to 100,995.37, 139,373.56 and 55,674.09

Step by Step Solution

1. Step 1: Write the proportion equation
   100,995.37 : 139,373.56 = 55,674.09 : x
2. Step 2: Convert to fraction form
   100,995.37/139,373.56 = 55,674.09/x
3. Step 3: Cross multiply
   100,995.37x = 139,373.56 × 55,674.09
4. Step 4: Simplify right side
   100,995.37x = 7,759,495,983.88
5. Step 5: Solve for x
   x = 7,759,495,983.88/100,995.37
6. Step 6: Final answer
   x = 76,830.22