Finding the Fourth Proportional to 85,359.30, 127,941.71 and 53,353.10

Step by Step Solution

1. Step 1: Write the proportion equation
   85,359.30 : 127,941.71 = 53,353.10 : x
2. Step 2: Convert to fraction form
   85,359.30/127,941.71 = 53,353.10/x
3. Step 3: Cross multiply
   85,359.30x = 127,941.71 × 53,353.10
4. Step 4: Simplify right side
   85,359.30x = 6,826,085,941.33
5. Step 5: Solve for x
   x = 6,826,085,941.33/85,359.30
6. Step 6: Final answer
   x = 79,968.86