Finding the Fourth Proportional to 101,057.79, 139,465.89 and 55,735.59

Step by Step Solution

1. Step 1: Write the proportion equation
   101,057.79 : 139,465.89 = 55,735.59 : x
2. Step 2: Convert to fraction form
   101,057.79/139,465.89 = 55,735.59/x
3. Step 3: Cross multiply
   101,057.79x = 139,465.89 × 55,735.59
4. Step 4: Simplify right side
   101,057.79x = 7,773,213,664.03
5. Step 5: Solve for x
   x = 7,773,213,664.03/101,057.79
6. Step 6: Final answer
   x = 76,918.50