Finding the Fourth Proportional to 101,245.33, 139,719.89 and 55,923.20

Step by Step Solution

1. Step 1: Write the proportion equation
   101,245.33 : 139,719.89 = 55,923.20 : x
2. Step 2: Convert to fraction form
   101,245.33/139,719.89 = 55,923.20/x
3. Step 3: Cross multiply
   101,245.33x = 139,719.89 × 55,923.20
4. Step 4: Simplify right side
   101,245.33x = 7,813,582,793.66
5. Step 5: Solve for x
   x = 7,813,582,793.66/101,245.33
6. Step 6: Final answer
   x = 77,174.75