Finding the Fourth Proportional to 101,105.42, 139,525.99 and 55,783.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,105.42 : 139,525.99 = 55,783.42 : x
2. Step 2: Convert to fraction form
   101,105.42/139,525.99 = 55,783.42/x
3. Step 3: Cross multiply
   101,105.42x = 139,525.99 × 55,783.42
4. Step 4: Simplify right side
   101,105.42x = 7,783,236,412.81
5. Step 5: Solve for x
   x = 7,783,236,412.81/101,105.42
6. Step 6: Final answer
   x = 76,981.40