Finding the Fourth Proportional to 138,464.56, 191,144.88 and 81,095.92

Step by Step Solution

1. Step 1: Write the proportion equation
   138,464.56 : 191,144.88 = 81,095.92 : x
2. Step 2: Convert to fraction form
   138,464.56/191,144.88 = 81,095.92/x
3. Step 3: Cross multiply
   138,464.56x = 191,144.88 × 81,095.92
4. Step 4: Simplify right side
   138,464.56x = 15,501,069,896.89
5. Step 5: Solve for x
   x = 15,501,069,896.89/138,464.56
6. Step 6: Final answer
   x = 111,949.73