Finding the Fourth Proportional to 72,484.70, 108,754.73 and 28,142.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,484.70 : 108,754.73 = 28,142.59 : x
2. Step 2: Convert to fraction form
   72,484.70/108,754.73 = 28,142.59/x
3. Step 3: Cross multiply
   72,484.70x = 108,754.73 × 28,142.59
4. Step 4: Simplify right side
   72,484.70x = 3,060,639,594.65
5. Step 5: Solve for x
   x = 3,060,639,594.65/72,484.70
6. Step 6: Final answer
   x = 42,224.63