Finding the Fourth Proportional to 85,082.69, 127,697.79 and 84,885.86

Step by Step Solution

1. Step 1: Write the proportion equation
   85,082.69 : 127,697.79 = 84,885.86 : x
2. Step 2: Convert to fraction form
   85,082.69/127,697.79 = 84,885.86/x
3. Step 3: Cross multiply
   85,082.69x = 127,697.79 × 84,885.86
4. Step 4: Simplify right side
   85,082.69x = 10,839,736,085.76
5. Step 5: Solve for x
   x = 10,839,736,085.76/85,082.69
6. Step 6: Final answer
   x = 127,402.37