Finding the Fourth Proportional to 99,168.18, 136,851.98 and 54,456.18

Step by Step Solution

1. Step 1: Write the proportion equation
   99,168.18 : 136,851.98 = 54,456.18 : x
2. Step 2: Convert to fraction form
   99,168.18/136,851.98 = 54,456.18/x
3. Step 3: Cross multiply
   99,168.18x = 136,851.98 × 54,456.18
4. Step 4: Simplify right side
   99,168.18x = 7,452,436,056.24
5. Step 5: Solve for x
   x = 7,452,436,056.24/99,168.18
6. Step 6: Final answer
   x = 75,149.47