Finding the Fourth Proportional to 100,967.63, 139,336.29 and 55,647.27

Step by Step Solution

1. Step 1: Write the proportion equation
   100,967.63 : 139,336.29 = 55,647.27 : x
2. Step 2: Convert to fraction form
   100,967.63/139,336.29 = 55,647.27/x
3. Step 3: Cross multiply
   100,967.63x = 139,336.29 × 55,647.27
4. Step 4: Simplify right side
   100,967.63x = 7,753,684,150.43
5. Step 5: Solve for x
   x = 7,753,684,150.43/100,967.63
6. Step 6: Final answer
   x = 76,793.77