Finding the Fourth Proportional to 105,579.02, 145,701.41 and 60,256.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,579.02 : 145,701.41 = 60,256.10 : x
2. Step 2: Convert to fraction form
   105,579.02/145,701.41 = 60,256.10/x
3. Step 3: Cross multiply
   105,579.02x = 145,701.41 × 60,256.10
4. Step 4: Simplify right side
   105,579.02x = 8,779,398,731.10
5. Step 5: Solve for x
   x = 8,779,398,731.10/105,579.02
6. Step 6: Final answer
   x = 83,154.77