Finding the Fourth Proportional to 99,323.72, 137,066.27 and 58,511.57

Step by Step Solution

1. Step 1: Write the proportion equation
   99,323.72 : 137,066.27 = 58,511.57 : x
2. Step 2: Convert to fraction form
   99,323.72/137,066.27 = 58,511.57/x
3. Step 3: Cross multiply
   99,323.72x = 137,066.27 × 58,511.57
4. Step 4: Simplify right side
   99,323.72x = 8,019,961,673.85
5. Step 5: Solve for x
   x = 8,019,961,673.85/99,323.72
6. Step 6: Final answer
   x = 80,745.69