Finding the Fourth Proportional to 101,399.33, 139,928.42 and 56,076.05

Step by Step Solution

1. Step 1: Write the proportion equation
   101,399.33 : 139,928.42 = 56,076.05 : x
2. Step 2: Convert to fraction form
   101,399.33/139,928.42 = 56,076.05/x
3. Step 3: Cross multiply
   101,399.33x = 139,928.42 × 56,076.05
4. Step 4: Simplify right side
   101,399.33x = 7,846,632,096.32
5. Step 5: Solve for x
   x = 7,846,632,096.32/101,399.33
6. Step 6: Final answer
   x = 77,383.47