Finding the Fourth Proportional to 105,504.61, 145,598.17 and 65,217.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,504.61 : 145,598.17 = 65,217.34 : x
2. Step 2: Convert to fraction form
   105,504.61/145,598.17 = 65,217.34/x
3. Step 3: Cross multiply
   105,504.61x = 145,598.17 × 65,217.34
4. Step 4: Simplify right side
   105,504.61x = 9,495,525,356.27
5. Step 5: Solve for x
   x = 9,495,525,356.27/105,504.61
6. Step 6: Final answer
   x = 90,001.05