Finding the Fourth Proportional to 86,569, 129,775.74 and 31,152.04

Step by Step Solution

1. Step 1: Write the proportion equation
   86,569 : 129,775.74 = 31,152.04 : x
2. Step 2: Convert to fraction form
   86,569/129,775.74 = 31,152.04/x
3. Step 3: Cross multiply
   86,569x = 129,775.74 × 31,152.04
4. Step 4: Simplify right side
   86,569x = 4,042,779,043.51
5. Step 5: Solve for x
   x = 4,042,779,043.51/86,569
6. Step 6: Final answer
   x = 46,700.08