Finding the Fourth Proportional to 100,964.67, 139,332.18 and 55,644.27

Step by Step Solution

1. Step 1: Write the proportion equation
   100,964.67 : 139,332.18 = 55,644.27 : x
2. Step 2: Convert to fraction form
   100,964.67/139,332.18 = 55,644.27/x
3. Step 3: Cross multiply
   100,964.67x = 139,332.18 × 55,644.27
4. Step 4: Simplify right side
   100,964.67x = 7,753,037,443.61
5. Step 5: Solve for x
   x = 7,753,037,443.61/100,964.67
6. Step 6: Final answer
   x = 76,789.61