Finding the Fourth Proportional to 72,446.75, 99,976.88 and 42,253.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,446.75 : 99,976.88 = 42,253.01 : x
2. Step 2: Convert to fraction form
   72,446.75/99,976.88 = 42,253.01/x
3. Step 3: Cross multiply
   72,446.75x = 99,976.88 × 42,253.01
4. Step 4: Simplify right side
   72,446.75x = 4,224,324,110.41
5. Step 5: Solve for x
   x = 4,224,324,110.41/72,446.75
6. Step 6: Final answer
   x = 58,309.37