Finding the Fourth Proportional to 81,200.16, 112,074.30 and 49,362.30

Step by Step Solution

1. Step 1: Write the proportion equation
   81,200.16 : 112,074.30 = 49,362.30 : x
2. Step 2: Convert to fraction form
   81,200.16/112,074.30 = 49,362.30/x
3. Step 3: Cross multiply
   81,200.16x = 112,074.30 × 49,362.30
4. Step 4: Simplify right side
   81,200.16x = 5,532,245,218.89
5. Step 5: Solve for x
   x = 5,532,245,218.89/81,200.16
6. Step 6: Final answer
   x = 68,130.96