Finding the Fourth Proportional to 105,404.13, 145,461.45 and 60,074.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,404.13 : 145,461.45 = 60,074.79 : x
2. Step 2: Convert to fraction form
   105,404.13/145,461.45 = 60,074.79/x
3. Step 3: Cross multiply
   105,404.13x = 145,461.45 × 60,074.79
4. Step 4: Simplify right side
   105,404.13x = 8,738,566,061.85
5. Step 5: Solve for x
   x = 8,738,566,061.85/105,404.13
6. Step 6: Final answer
   x = 82,905.35