Finding the Fourth Proportional to 81,200.40, 112,091.10 and 49,379.52

Step by Step Solution

1. Step 1: Write the proportion equation
   81,200.40 : 112,091.10 = 49,379.52 : x
2. Step 2: Convert to fraction form
   81,200.40/112,091.10 = 49,379.52/x
3. Step 3: Cross multiply
   81,200.40x = 112,091.10 × 49,379.52
4. Step 4: Simplify right side
   81,200.40x = 5,535,004,714.27
5. Step 5: Solve for x
   x = 5,535,004,714.27/81,200.40
6. Step 6: Final answer
   x = 68,164.75