Finding the Fourth Proportional to 101,296.88, 139,789.69 and 56,584.88

Step by Step Solution

1. Step 1: Write the proportion equation
   101,296.88 : 139,789.69 = 56,584.88 : x
2. Step 2: Convert to fraction form
   101,296.88/139,789.69 = 56,584.88/x
3. Step 3: Cross multiply
   101,296.88x = 139,789.69 × 56,584.88
4. Step 4: Simplify right side
   101,296.88x = 7,909,982,833.89
5. Step 5: Solve for x
   x = 7,909,982,833.89/101,296.88
6. Step 6: Final answer
   x = 78,087.13