Finding the Fourth Proportional to 101,457.50, 140,011.83 and 56,745.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,457.50 : 140,011.83 = 56,745.50 : x
2. Step 2: Convert to fraction form
   101,457.50/140,011.83 = 56,745.50/x
3. Step 3: Cross multiply
   101,457.50x = 140,011.83 × 56,745.50
4. Step 4: Simplify right side
   101,457.50x = 7,945,041,299.27
5. Step 5: Solve for x
   x = 7,945,041,299.27/101,457.50
6. Step 6: Final answer
   x = 78,309.06