Finding the Fourth Proportional to 99,673.74, 137,546.51 and 56,650.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,673.74 : 137,546.51 = 56,650.59 : x
2. Step 2: Convert to fraction form
   99,673.74/137,546.51 = 56,650.59/x
3. Step 3: Cross multiply
   99,673.74x = 137,546.51 × 56,650.59
4. Step 4: Simplify right side
   99,673.74x = 7,792,090,660.69
5. Step 5: Solve for x
   x = 7,792,090,660.69/99,673.74
6. Step 6: Final answer
   x = 78,175.96