Finding the Fourth Proportional to 105,617, 145,727.82 and 60,280.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,617 : 145,727.82 = 60,280.49 : x
2. Step 2: Convert to fraction form
   105,617/145,727.82 = 60,280.49/x
3. Step 3: Cross multiply
   105,617x = 145,727.82 × 60,280.49
4. Step 4: Simplify right side
   105,617x = 8,784,544,094.83
5. Step 5: Solve for x
   x = 8,784,544,094.83/105,617
6. Step 6: Final answer
   x = 83,173.58