Finding the Fourth Proportional to 104,706, 156,905.64 and 65,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,706 : 156,905.64 = 65,142.72 : x
2. Step 2: Convert to fraction form
   104,706/156,905.64 = 65,142.72/x
3. Step 3: Cross multiply
   104,706x = 156,905.64 × 65,142.72
4. Step 4: Simplify right side
   104,706x = 10,221,260,172.94
5. Step 5: Solve for x
   x = 10,221,260,172.94/104,706
6. Step 6: Final answer
   x = 97,618.67