Finding the Fourth Proportional to 72,441, 99,968.85 and 42,247.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,441 : 99,968.85 = 42,247.17 : x
2. Step 2: Convert to fraction form
   72,441/99,968.85 = 42,247.17/x
3. Step 3: Cross multiply
   72,441x = 99,968.85 × 42,247.17
4. Step 4: Simplify right side
   72,441x = 4,223,401,000.65
5. Step 5: Solve for x
   x = 4,223,401,000.65/72,441
6. Step 6: Final answer
   x = 58,301.25