Finding the Fourth Proportional to 105,990.42, 146,259.90 and 60,668.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,990.42 : 146,259.90 = 60,668.76 : x
2. Step 2: Convert to fraction form
   105,990.42/146,259.90 = 60,668.76/x
3. Step 3: Cross multiply
   105,990.42x = 146,259.90 × 60,668.76
4. Step 4: Simplify right side
   105,990.42x = 8,873,406,770.72
5. Step 5: Solve for x
   x = 8,873,406,770.72/105,990.42
6. Step 6: Final answer
   x = 83,718.95