Finding the Fourth Proportional to 105,872.27, 146,075.20 and 60,540.90

Step by Step Solution

1. Step 1: Write the proportion equation
   105,872.27 : 146,075.20 = 60,540.90 : x
2. Step 2: Convert to fraction form
   105,872.27/146,075.20 = 60,540.90/x
3. Step 3: Cross multiply
   105,872.27x = 146,075.20 × 60,540.90
4. Step 4: Simplify right side
   105,872.27x = 8,843,523,376.55
5. Step 5: Solve for x
   x = 8,843,523,376.55/105,872.27
6. Step 6: Final answer
   x = 83,530.12