Finding the Fourth Proportional to 99,067.56, 136,710.86 and 54,863.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,067.56 : 136,710.86 = 54,863.92 : x
2. Step 2: Convert to fraction form
   99,067.56/136,710.86 = 54,863.92/x
3. Step 3: Cross multiply
   99,067.56x = 136,710.86 × 54,863.92
4. Step 4: Simplify right side
   99,067.56x = 7,500,493,686.17
5. Step 5: Solve for x
   x = 7,500,493,686.17/99,067.56
6. Step 6: Final answer
   x = 75,710.90