Finding the Fourth Proportional to 99,548.24, 137,371.71 and 56,522.09

Step by Step Solution

1. Step 1: Write the proportion equation
   99,548.24 : 137,371.71 = 56,522.09 : x
2. Step 2: Convert to fraction form
   99,548.24/137,371.71 = 56,522.09/x
3. Step 3: Cross multiply
   99,548.24x = 137,371.71 × 56,522.09
4. Step 4: Simplify right side
   99,548.24x = 7,764,535,469.22
5. Step 5: Solve for x
   x = 7,764,535,469.22/99,548.24
6. Step 6: Final answer
   x = 77,997.72