Finding the Fourth Proportional to 105,697.46, 145,841.95 and 62,669

Step by Step Solution

1. Step 1: Write the proportion equation
   105,697.46 : 145,841.95 = 62,669 : x
2. Step 2: Convert to fraction form
   105,697.46/145,841.95 = 62,669/x
3. Step 3: Cross multiply
   105,697.46x = 145,841.95 × 62,669
4. Step 4: Simplify right side
   105,697.46x = 9,139,769,164.55
5. Step 5: Solve for x
   x = 9,139,769,164.55/105,697.46
6. Step 6: Final answer
   x = 86,471.04