Finding the Fourth Proportional to 99,105.32, 136,765.43 and 53,783.31

Step by Step Solution

1. Step 1: Write the proportion equation
   99,105.32 : 136,765.43 = 53,783.31 : x
2. Step 2: Convert to fraction form
   99,105.32/136,765.43 = 53,783.31/x
3. Step 3: Cross multiply
   99,105.32x = 136,765.43 × 53,783.31
4. Step 4: Simplify right side
   99,105.32x = 7,355,697,754.28
5. Step 5: Solve for x
   x = 7,355,697,754.28/99,105.32
6. Step 6: Final answer
   x = 74,221.02