Finding the Fourth Proportional to 71,846.34, 99,113.61 and 55,821.12

Step by Step Solution

1. Step 1: Write the proportion equation
   71,846.34 : 99,113.61 = 55,821.12 : x
2. Step 2: Convert to fraction form
   71,846.34/99,113.61 = 55,821.12/x
3. Step 3: Cross multiply
   71,846.34x = 99,113.61 × 55,821.12
4. Step 4: Simplify right side
   71,846.34x = 5,532,632,717.44
5. Step 5: Solve for x
   x = 5,532,632,717.44/71,846.34
6. Step 6: Final answer
   x = 77,006.47