Finding the Fourth Proportional to 105,281.39, 145,241.69 and 62,815.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,281.39 : 145,241.69 = 62,815.38 : x
2. Step 2: Convert to fraction form
   105,281.39/145,241.69 = 62,815.38/x
3. Step 3: Cross multiply
   105,281.39x = 145,241.69 × 62,815.38
4. Step 4: Simplify right side
   105,281.39x = 9,123,411,635.12
5. Step 5: Solve for x
   x = 9,123,411,635.12/105,281.39
6. Step 6: Final answer
   x = 86,657.41