Finding the Fourth Proportional to 72,142.79, 99,554.18 and 41,926.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,142.79 : 99,554.18 = 41,926.68 : x
2. Step 2: Convert to fraction form
   72,142.79/99,554.18 = 41,926.68/x
3. Step 3: Cross multiply
   72,142.79x = 99,554.18 × 41,926.68
4. Step 4: Simplify right side
   72,142.79x = 4,173,976,037.89
5. Step 5: Solve for x
   x = 4,173,976,037.89/72,142.79
6. Step 6: Final answer
   x = 57,857.15