Finding the Fourth Proportional to 87,312.06, 130,145 and 82,879.74

Step by Step Solution

1. Step 1: Write the proportion equation
   87,312.06 : 130,145 = 82,879.74 : x
2. Step 2: Convert to fraction form
   87,312.06/130,145 = 82,879.74/x
3. Step 3: Cross multiply
   87,312.06x = 130,145 × 82,879.74
4. Step 4: Simplify right side
   87,312.06x = 10,786,383,762.30
5. Step 5: Solve for x
   x = 10,786,383,762.30/87,312.06
6. Step 6: Final answer
   x = 123,538.30