Finding the Fourth Proportional to 103,136.10, 142,300.38 and 59,517.60

Step by Step Solution

1. Step 1: Write the proportion equation
   103,136.10 : 142,300.38 = 59,517.60 : x
2. Step 2: Convert to fraction form
   103,136.10/142,300.38 = 59,517.60/x
3. Step 3: Cross multiply
   103,136.10x = 142,300.38 × 59,517.60
4. Step 4: Simplify right side
   103,136.10x = 8,469,377,096.69
5. Step 5: Solve for x
   x = 8,469,377,096.69/103,136.10
6. Step 6: Final answer
   x = 82,118.45