Finding the Fourth Proportional to 99,769.48, 137,677.22 and 54,449.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99,769.48 : 137,677.22 = 54,449.34 : x
2. Step 2: Convert to fraction form
   99,769.48/137,677.22 = 54,449.34/x
3. Step 3: Cross multiply
   99,769.48x = 137,677.22 × 54,449.34
4. Step 4: Simplify right side
   99,769.48x = 7,496,433,762.03
5. Step 5: Solve for x
   x = 7,496,433,762.03/99,769.48
6. Step 6: Final answer
   x = 75,137.54