Finding the Fourth Proportional to 101,090.68, 139,504.74 and 55,771.46

Step by Step Solution

1. Step 1: Write the proportion equation
   101,090.68 : 139,504.74 = 55,771.46 : x
2. Step 2: Convert to fraction form
   101,090.68/139,504.74 = 55,771.46/x
3. Step 3: Cross multiply
   101,090.68x = 139,504.74 × 55,771.46
4. Step 4: Simplify right side
   101,090.68x = 7,780,383,026.72
5. Step 5: Solve for x
   x = 7,780,383,026.72/101,090.68
6. Step 6: Final answer
   x = 76,964.40