Finding the Fourth Proportional to 105,586.01, 145,708.71 and 57,841.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,586.01 : 145,708.71 = 57,841.05 : x
2. Step 2: Convert to fraction form
   105,586.01/145,708.71 = 57,841.05/x
3. Step 3: Cross multiply
   105,586.01x = 145,708.71 × 57,841.05
4. Step 4: Simplify right side
   105,586.01x = 8,427,944,491.34
5. Step 5: Solve for x
   x = 8,427,944,491.34/105,586.01
6. Step 6: Final answer
   x = 79,820.66