Finding the Fourth Proportional to 72,425.20, 108,601.35 and 42,852.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,425.20 : 108,601.35 = 42,852.10 : x
2. Step 2: Convert to fraction form
   72,425.20/108,601.35 = 42,852.10/x
3. Step 3: Cross multiply
   72,425.20x = 108,601.35 × 42,852.10
4. Step 4: Simplify right side
   72,425.20x = 4,653,795,910.34
5. Step 5: Solve for x
   x = 4,653,795,910.34/72,425.20
6. Step 6: Final answer
   x = 64,256.58