Finding the Fourth Proportional to 127,786.40, 191,716.62 and 52,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   127,786.40 : 191,716.62 = 52,892.72 : x
2. Step 2: Convert to fraction form
   127,786.40/191,716.62 = 52,892.72/x
3. Step 3: Cross multiply
   127,786.40x = 191,716.62 × 52,892.72
4. Step 4: Simplify right side
   127,786.40x = 10,140,413,501.01
5. Step 5: Solve for x
   x = 10,140,413,501.01/127,786.40
6. Step 6: Final answer
   x = 79,354.40