Finding the Fourth Proportional to 72,225.20, 108,126.99 and 42,147.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,225.20 : 108,126.99 = 42,147.27 : x
2. Step 2: Convert to fraction form
   72,225.20/108,126.99 = 42,147.27/x
3. Step 3: Cross multiply
   72,225.20x = 108,126.99 × 42,147.27
4. Step 4: Simplify right side
   72,225.20x = 4,557,257,441.82
5. Step 5: Solve for x
   x = 4,557,257,441.82/72,225.20
6. Step 6: Final answer
   x = 63,097.89