Finding the Fourth Proportional to 99,022.64, 136,658.76 and 56,582.96

Step by Step Solution

1. Step 1: Write the proportion equation
   99,022.64 : 136,658.76 = 56,582.96 : x
2. Step 2: Convert to fraction form
   99,022.64/136,658.76 = 56,582.96/x
3. Step 3: Cross multiply
   99,022.64x = 136,658.76 × 56,582.96
4. Step 4: Simplify right side
   99,022.64x = 7,732,557,150.73
5. Step 5: Solve for x
   x = 7,732,557,150.73/99,022.64
6. Step 6: Final answer
   x = 78,088.78