Finding the Fourth Proportional to 101,359.14, 139,875.78 and 56,647.14

Step by Step Solution

1. Step 1: Write the proportion equation
   101,359.14 : 139,875.78 = 56,647.14 : x
2. Step 2: Convert to fraction form
   101,359.14/139,875.78 = 56,647.14/x
3. Step 3: Cross multiply
   101,359.14x = 139,875.78 × 56,647.14
4. Step 4: Simplify right side
   101,359.14x = 7,923,562,892.27
5. Step 5: Solve for x
   x = 7,923,562,892.27/101,359.14
6. Step 6: Final answer
   x = 78,173.15