Finding the Fourth Proportional to 101,296.50, 139,789.17 and 56,584.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,296.50 : 139,789.17 = 56,584.50 : x
2. Step 2: Convert to fraction form
   101,296.50/139,789.17 = 56,584.50/x
3. Step 3: Cross multiply
   101,296.50x = 139,789.17 × 56,584.50
4. Step 4: Simplify right side
   101,296.50x = 7,909,900,289.87
5. Step 5: Solve for x
   x = 7,909,900,289.87/101,296.50
6. Step 6: Final answer
   x = 78,086.61