Finding the Fourth Proportional to 72,443.73, 99,974.95 and 42,224.19

Step by Step Solution

1. Step 1: Write the proportion equation
   72,443.73 : 99,974.95 = 42,224.19 : x
2. Step 2: Convert to fraction form
   72,443.73/99,974.95 = 42,224.19/x
3. Step 3: Cross multiply
   72,443.73x = 99,974.95 × 42,224.19
4. Step 4: Simplify right side
   72,443.73x = 4,221,360,803.57
5. Step 5: Solve for x
   x = 4,221,360,803.57/72,443.73
6. Step 6: Final answer
   x = 58,270.89