Finding the Fourth Proportional to 72,410.47, 99,922.33 and 42,200.71

Step by Step Solution

1. Step 1: Write the proportion equation
   72,410.47 : 99,922.33 = 42,200.71 : x
2. Step 2: Convert to fraction form
   72,410.47/99,922.33 = 42,200.71/x
3. Step 3: Cross multiply
   72,410.47x = 99,922.33 × 42,200.71
4. Step 4: Simplify right side
   72,410.47x = 4,216,793,270.85
5. Step 5: Solve for x
   x = 4,216,793,270.85/72,410.47
6. Step 6: Final answer
   x = 58,234.58