Finding the Fourth Proportional to 101,011, 139,399.50 and 56,299

Step by Step Solution

1. Step 1: Write the proportion equation
   101,011 : 139,399.50 = 56,299 : x
2. Step 2: Convert to fraction form
   101,011/139,399.50 = 56,299/x
3. Step 3: Cross multiply
   101,011x = 139,399.50 × 56,299
4. Step 4: Simplify right side
   101,011x = 7,848,052,450.50
5. Step 5: Solve for x
   x = 7,848,052,450.50/101,011
6. Step 6: Final answer
   x = 77,695.03