Finding the Fourth Proportional to 99,752.50, 137,658.45 and 55,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,752.50 : 137,658.45 = 55,040.50 : x
2. Step 2: Convert to fraction form
   99,752.50/137,658.45 = 55,040.50/x
3. Step 3: Cross multiply
   99,752.50x = 137,658.45 × 55,040.50
4. Step 4: Simplify right side
   99,752.50x = 7,576,789,917.23
5. Step 5: Solve for x
   x = 7,576,789,917.23/99,752.50
6. Step 6: Final answer
   x = 75,955.89