Finding the Fourth Proportional to 85,100.17, 127,669.50 and 28,173.97

Step by Step Solution

1. Step 1: Write the proportion equation
   85,100.17 : 127,669.50 = 28,173.97 : x
2. Step 2: Convert to fraction form
   85,100.17/127,669.50 = 28,173.97/x
3. Step 3: Cross multiply
   85,100.17x = 127,669.50 × 28,173.97
4. Step 4: Simplify right side
   85,100.17x = 3,596,956,662.92
5. Step 5: Solve for x
   x = 3,596,956,662.92/85,100.17
6. Step 6: Final answer
   x = 42,267.33