Finding the Fourth Proportional to 105,384.14, 145,443.40 and 69,116.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,384.14 : 145,443.40 = 69,116.08 : x
2. Step 2: Convert to fraction form
   105,384.14/145,443.40 = 69,116.08/x
3. Step 3: Cross multiply
   105,384.14x = 145,443.40 × 69,116.08
4. Step 4: Simplify right side
   105,384.14x = 10,052,477,669.87
5. Step 5: Solve for x
   x = 10,052,477,669.87/105,384.14
6. Step 6: Final answer
   x = 95,388.90