Finding the Fourth Proportional to 99,315.23, 137,057.67 and 53,996.27

Step by Step Solution

1. Step 1: Write the proportion equation
   99,315.23 : 137,057.67 = 53,996.27 : x
2. Step 2: Convert to fraction form
   99,315.23/137,057.67 = 53,996.27/x
3. Step 3: Cross multiply
   99,315.23x = 137,057.67 × 53,996.27
4. Step 4: Simplify right side
   99,315.23x = 7,400,603,040.55
5. Step 5: Solve for x
   x = 7,400,603,040.55/99,315.23
6. Step 6: Final answer
   x = 74,516.30