Finding the Fourth Proportional to 99,256.29, 136,974.55 and 53,934.27

Step by Step Solution

1. Step 1: Write the proportion equation
   99,256.29 : 136,974.55 = 53,934.27 : x
2. Step 2: Convert to fraction form
   99,256.29/136,974.55 = 53,934.27/x
3. Step 3: Cross multiply
   99,256.29x = 136,974.55 × 53,934.27
4. Step 4: Simplify right side
   99,256.29x = 7,387,622,362.83
5. Step 5: Solve for x
   x = 7,387,622,362.83/99,256.29
6. Step 6: Final answer
   x = 74,429.77