Finding the Fourth Proportional to 86,826.20, 130,142.10 and 49,404.20

Step by Step Solution

1. Step 1: Write the proportion equation
   86,826.20 : 130,142.10 = 49,404.20 : x
2. Step 2: Convert to fraction form
   86,826.20/130,142.10 = 49,404.20/x
3. Step 3: Cross multiply
   86,826.20x = 130,142.10 × 49,404.20
4. Step 4: Simplify right side
   86,826.20x = 6,429,566,336.82
5. Step 5: Solve for x
   x = 6,429,566,336.82/86,826.20
6. Step 6: Final answer
   x = 74,050.99