Finding the Fourth Proportional to 100,968.38, 139,337.33 and 55,648.02

Step by Step Solution

1. Step 1: Write the proportion equation
   100,968.38 : 139,337.33 = 55,648.02 : x
2. Step 2: Convert to fraction form
   100,968.38/139,337.33 = 55,648.02/x
3. Step 3: Cross multiply
   100,968.38x = 139,337.33 × 55,648.02
4. Step 4: Simplify right side
   100,968.38x = 7,753,846,248.35
5. Step 5: Solve for x
   x = 7,753,846,248.35/100,968.38
6. Step 6: Final answer
   x = 76,794.80