Finding the Fourth Proportional to 101,278.01, 139,761.69 and 55,957.97

Step by Step Solution

1. Step 1: Write the proportion equation
   101,278.01 : 139,761.69 = 55,957.97 : x
2. Step 2: Convert to fraction form
   101,278.01/139,761.69 = 55,957.97/x
3. Step 3: Cross multiply
   101,278.01x = 139,761.69 × 55,957.97
4. Step 4: Simplify right side
   101,278.01x = 7,820,780,456.17
5. Step 5: Solve for x
   x = 7,820,780,456.17/101,278.01
6. Step 6: Final answer
   x = 77,220.91