Finding the Fourth Proportional to 72,037.80, 108,105.30 and 42,424.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,037.80 : 108,105.30 = 42,424.20 : x
2. Step 2: Convert to fraction form
   72,037.80/108,105.30 = 42,424.20/x
3. Step 3: Cross multiply
   72,037.80x = 108,105.30 × 42,424.20
4. Step 4: Simplify right side
   72,037.80x = 4,586,280,868.26
5. Step 5: Solve for x
   x = 4,586,280,868.26/72,037.80
6. Step 6: Final answer
   x = 63,664.92