Finding the Fourth Proportional to 72,672.80, 100,281.12 and 42,458.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,672.80 : 100,281.12 = 42,458.72 : x
2. Step 2: Convert to fraction form
   72,672.80/100,281.12 = 42,458.72/x
3. Step 3: Cross multiply
   72,672.80x = 100,281.12 × 42,458.72
4. Step 4: Simplify right side
   72,672.80x = 4,257,807,995.37
5. Step 5: Solve for x
   x = 4,257,807,995.37/72,672.80
6. Step 6: Final answer
   x = 58,588.74