Finding the Fourth Proportional to 42,756.18, 64,136.43 and 13,194.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,756.18 : 64,136.43 = 13,194.24 : x
2. Step 2: Convert to fraction form
   42,756.18/64,136.43 = 13,194.24/x
3. Step 3: Cross multiply
   42,756.18x = 64,136.43 × 13,194.24
4. Step 4: Simplify right side
   42,756.18x = 846,231,450.16
5. Step 5: Solve for x
   x = 846,231,450.16/42,756.18
6. Step 6: Final answer
   x = 19,792.03