Finding the Fourth Proportional to 105,902.88, 146,146.37 and 57,504.87

Step by Step Solution

1. Step 1: Write the proportion equation
   105,902.88 : 146,146.37 = 57,504.87 : x
2. Step 2: Convert to fraction form
   105,902.88/146,146.37 = 57,504.87/x
3. Step 3: Cross multiply
   105,902.88x = 146,146.37 × 57,504.87
4. Step 4: Simplify right side
   105,902.88x = 8,404,126,989.57
5. Step 5: Solve for x
   x = 8,404,126,989.57/105,902.88
6. Step 6: Final answer
   x = 79,356.93