Finding the Fourth Proportional to 85,424.94, 128,140.79 and 32,111.55

Step by Step Solution

1. Step 1: Write the proportion equation
   85,424.94 : 128,140.79 = 32,111.55 : x
2. Step 2: Convert to fraction form
   85,424.94/128,140.79 = 32,111.55/x
3. Step 3: Cross multiply
   85,424.94x = 128,140.79 × 32,111.55
4. Step 4: Simplify right side
   85,424.94x = 4,114,799,224.57
5. Step 5: Solve for x
   x = 4,114,799,224.57/85,424.94
6. Step 6: Final answer
   x = 48,168.59