Finding the Fourth Proportional to 108,737.47, 150,057.60 and 60,990.40

Step by Step Solution

1. Step 1: Write the proportion equation
   108,737.47 : 150,057.60 = 60,990.40 : x
2. Step 2: Convert to fraction form
   108,737.47/150,057.60 = 60,990.40/x
3. Step 3: Cross multiply
   108,737.47x = 150,057.60 × 60,990.40
4. Step 4: Simplify right side
   108,737.47x = 9,152,073,047.04
5. Step 5: Solve for x
   x = 9,152,073,047.04/108,737.47
6. Step 6: Final answer
   x = 84,166.69