Finding the Fourth Proportional to 105,839.84, 146,066.28 and 69,967.64

Step by Step Solution

1. Step 1: Write the proportion equation
   105,839.84 : 146,066.28 = 69,967.64 : x
2. Step 2: Convert to fraction form
   105,839.84/146,066.28 = 69,967.64/x
3. Step 3: Cross multiply
   105,839.84x = 146,066.28 × 69,967.64
4. Step 4: Simplify right side
   105,839.84x = 10,219,912,895.18
5. Step 5: Solve for x
   x = 10,219,912,895.18/105,839.84
6. Step 6: Final answer
   x = 96,560.17