Finding the Fourth Proportional to 99,745.50, 137,648.79 and 55,033.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,745.50 : 137,648.79 = 55,033.50 : x
2. Step 2: Convert to fraction form
   99,745.50/137,648.79 = 55,033.50/x
3. Step 3: Cross multiply
   99,745.50x = 137,648.79 × 55,033.50
4. Step 4: Simplify right side
   99,745.50x = 7,575,294,684.47
5. Step 5: Solve for x
   x = 7,575,294,684.47/99,745.50
6. Step 6: Final answer
   x = 75,946.23