Finding the Fourth Proportional to 51,773.10, 77,545.82 and 42,786.58

Step by Step Solution

1. Step 1: Write the proportion equation
   51,773.10 : 77,545.82 = 42,786.58 : x
2. Step 2: Convert to fraction form
   51,773.10/77,545.82 = 42,786.58/x
3. Step 3: Cross multiply
   51,773.10x = 77,545.82 × 42,786.58
4. Step 4: Simplify right side
   51,773.10x = 3,317,920,431.10
5. Step 5: Solve for x
   x = 3,317,920,431.10/51,773.10
6. Step 6: Final answer
   x = 64,085.80