Finding the Fourth Proportional to 85,419.18, 128,152.17 and 41,083.02

Step by Step Solution

1. Step 1: Write the proportion equation
   85,419.18 : 128,152.17 = 41,083.02 : x
2. Step 2: Convert to fraction form
   85,419.18/128,152.17 = 41,083.02/x
3. Step 3: Cross multiply
   85,419.18x = 128,152.17 × 41,083.02
4. Step 4: Simplify right side
   85,419.18x = 5,264,878,163.15
5. Step 5: Solve for x
   x = 5,264,878,163.15/85,419.18
6. Step 6: Final answer
   x = 61,635.78