Finding the Fourth Proportional to 101,941.50, 140,679.27 and 57,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,941.50 : 140,679.27 = 57,229.50 : x
2. Step 2: Convert to fraction form
   101,941.50/140,679.27 = 57,229.50/x
3. Step 3: Cross multiply
   101,941.50x = 140,679.27 × 57,229.50
4. Step 4: Simplify right side
   101,941.50x = 8,051,004,282.47
5. Step 5: Solve for x
   x = 8,051,004,282.47/101,941.50
6. Step 6: Final answer
   x = 78,976.71