Finding the Fourth Proportional to 72,450, 99,981.27 and 42,256.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,450 : 99,981.27 = 42,256.17 : x
2. Step 2: Convert to fraction form
   72,450/99,981.27 = 42,256.17/x
3. Step 3: Cross multiply
   72,450x = 99,981.27 × 42,256.17
4. Step 4: Simplify right side
   72,450x = 4,224,825,541.94
5. Step 5: Solve for x
   x = 4,224,825,541.94/72,450
6. Step 6: Final answer
   x = 58,313.67