Finding the Fourth Proportional to 105,816.69, 146,017.39 and 62,788.77

Step by Step Solution

1. Step 1: Write the proportion equation
   105,816.69 : 146,017.39 = 62,788.77 : x
2. Step 2: Convert to fraction form
   105,816.69/146,017.39 = 62,788.77/x
3. Step 3: Cross multiply
   105,816.69x = 146,017.39 × 62,788.77
4. Step 4: Simplify right side
   105,816.69x = 9,168,252,545.12
5. Step 5: Solve for x
   x = 9,168,252,545.12/105,816.69
6. Step 6: Final answer
   x = 86,642.78