Finding the Fourth Proportional to 86,428.69, 119,271.59 and 48,704.29

Step by Step Solution

1. Step 1: Write the proportion equation
   86,428.69 : 119,271.59 = 48,704.29 : x
2. Step 2: Convert to fraction form
   86,428.69/119,271.59 = 48,704.29/x
3. Step 3: Cross multiply
   86,428.69x = 119,271.59 × 48,704.29
4. Step 4: Simplify right side
   86,428.69x = 5,809,038,108.12
5. Step 5: Solve for x
   x = 5,809,038,108.12/86,428.69
6. Step 6: Final answer
   x = 67,211.92