Finding the Fourth Proportional to 128,082.71, 191,992.80 and 53,246.27

Step by Step Solution

1. Step 1: Write the proportion equation
   128,082.71 : 191,992.80 = 53,246.27 : x
2. Step 2: Convert to fraction form
   128,082.71/191,992.80 = 53,246.27/x
3. Step 3: Cross multiply
   128,082.71x = 191,992.80 × 53,246.27
4. Step 4: Simplify right side
   128,082.71x = 10,222,900,466.86
5. Step 5: Solve for x
   x = 10,222,900,466.86/128,082.71
6. Step 6: Final answer
   x = 79,814.84