Finding the Fourth Proportional to 51,773.29, 77,546.10 and 42,786.77

Step by Step Solution

1. Step 1: Write the proportion equation
   51,773.29 : 77,546.10 = 42,786.77 : x
2. Step 2: Convert to fraction form
   51,773.29/77,546.10 = 42,786.77/x
3. Step 3: Cross multiply
   51,773.29x = 77,546.10 × 42,786.77
4. Step 4: Simplify right side
   51,773.29x = 3,317,947,145.10
5. Step 5: Solve for x
   x = 3,317,947,145.10/51,773.29
6. Step 6: Final answer
   x = 64,086.08