Finding the Fourth Proportional to 99,105.16, 136,766.13 and 53,783.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,105.16 : 136,766.13 = 53,783.54 : x
2. Step 2: Convert to fraction form
   99,105.16/136,766.13 = 53,783.54/x
3. Step 3: Cross multiply
   99,105.16x = 136,766.13 × 53,783.54
4. Step 4: Simplify right side
   99,105.16x = 7,355,766,017.47
5. Step 5: Solve for x
   x = 7,355,766,017.47/99,105.16
6. Step 6: Final answer
   x = 74,221.83