Finding the Fourth Proportional to 72,401.22, 99,912.06 and 42,184.65

Step by Step Solution

1. Step 1: Write the proportion equation
   72,401.22 : 99,912.06 = 42,184.65 : x
2. Step 2: Convert to fraction form
   72,401.22/99,912.06 = 42,184.65/x
3. Step 3: Cross multiply
   72,401.22x = 99,912.06 × 42,184.65
4. Step 4: Simplify right side
   72,401.22x = 4,214,755,281.88
5. Step 5: Solve for x
   x = 4,214,755,281.88/72,401.22
6. Step 6: Final answer
   x = 58,213.87