Finding the Fourth Proportional to 101,369.50, 139,889.88 and 55,429.26

Step by Step Solution

1. Step 1: Write the proportion equation
   101,369.50 : 139,889.88 = 55,429.26 : x
2. Step 2: Convert to fraction form
   101,369.50/139,889.88 = 55,429.26/x
3. Step 3: Cross multiply
   101,369.50x = 139,889.88 × 55,429.26
4. Step 4: Simplify right side
   101,369.50x = 7,753,992,529.89
5. Step 5: Solve for x
   x = 7,753,992,529.89/101,369.50
6. Step 6: Final answer
   x = 76,492.36