Finding the Fourth Proportional to 105,212, 145,192.56 and 60,500

Step by Step Solution

1. Step 1: Write the proportion equation
   105,212 : 145,192.56 = 60,500 : x
2. Step 2: Convert to fraction form
   105,212/145,192.56 = 60,500/x
3. Step 3: Cross multiply
   105,212x = 145,192.56 × 60,500
4. Step 4: Simplify right side
   105,212x = 8,784,149,880
5. Step 5: Solve for x
   x = 8,784,149,880/105,212
6. Step 6: Final answer
   x = 83,490