Finding the Fourth Proportional to 101,161.50, 139,602.87 and 55,839.49

Step by Step Solution

1. Step 1: Write the proportion equation
   101,161.50 : 139,602.87 = 55,839.49 : x
2. Step 2: Convert to fraction form
   101,161.50/139,602.87 = 55,839.49/x
3. Step 3: Cross multiply
   101,161.50x = 139,602.87 × 55,839.49
4. Step 4: Simplify right side
   101,161.50x = 7,795,353,063.34
5. Step 5: Solve for x
   x = 7,795,353,063.34/101,161.50
6. Step 6: Final answer
   x = 77,058.50