Finding the Fourth Proportional to 105,891.57, 146,130.84 and 60,570.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,891.57 : 146,130.84 = 60,570.05 : x
2. Step 2: Convert to fraction form
   105,891.57/146,130.84 = 60,570.05/x
3. Step 3: Cross multiply
   105,891.57x = 146,130.84 × 60,570.05
4. Step 4: Simplify right side
   105,891.57x = 8,851,151,554.69
5. Step 5: Solve for x
   x = 8,851,151,554.69/105,891.57
6. Step 6: Final answer
   x = 83,586.93