Finding the Fourth Proportional to 86,804.32, 130,110.72 and 56,806.24

Step by Step Solution

1. Step 1: Write the proportion equation
   86,804.32 : 130,110.72 = 56,806.24 : x
2. Step 2: Convert to fraction form
   86,804.32/130,110.72 = 56,806.24/x
3. Step 3: Cross multiply
   86,804.32x = 130,110.72 × 56,806.24
4. Step 4: Simplify right side
   86,804.32x = 7,391,100,786.89
5. Step 5: Solve for x
   x = 7,391,100,786.89/86,804.32
6. Step 6: Final answer
   x = 85,146.69