Finding the Fourth Proportional to 72,189.68, 99,634.06 and 41,992.51

Step by Step Solution

1. Step 1: Write the proportion equation
   72,189.68 : 99,634.06 = 41,992.51 : x
2. Step 2: Convert to fraction form
   72,189.68/99,634.06 = 41,992.51/x
3. Step 3: Cross multiply
   72,189.68x = 99,634.06 × 41,992.51
4. Step 4: Simplify right side
   72,189.68x = 4,183,884,260.89
5. Step 5: Solve for x
   x = 4,183,884,260.89/72,189.68
6. Step 6: Final answer
   x = 57,956.82