Finding the Fourth Proportional to 86,509, 119,389.71 and 48,790.54

Step by Step Solution

1. Step 1: Write the proportion equation
   86,509 : 119,389.71 = 48,790.54 : x
2. Step 2: Convert to fraction form
   86,509/119,389.71 = 48,790.54/x
3. Step 3: Cross multiply
   86,509x = 119,389.71 × 48,790.54
4. Step 4: Simplify right side
   86,509x = 5,825,088,421.34
5. Step 5: Solve for x
   x = 5,825,088,421.34/86,509
6. Step 6: Final answer
   x = 67,335.06