Finding the Fourth Proportional to 91,993.98, 138,166.05 and 57,176.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,993.98 : 138,166.05 = 57,176.94 : x
2. Step 2: Convert to fraction form
   91,993.98/138,166.05 = 57,176.94/x
3. Step 3: Cross multiply
   91,993.98x = 138,166.05 × 57,176.94
4. Step 4: Simplify right side
   91,993.98x = 7,899,911,950.89
5. Step 5: Solve for x
   x = 7,899,911,950.89/91,993.98
6. Step 6: Final answer
   x = 85,874.23