Finding the Fourth Proportional to 104,608.10, 156,739.35 and 89,056.10

Step by Step Solution

1. Step 1: Write the proportion equation
   104,608.10 : 156,739.35 = 89,056.10 : x
2. Step 2: Convert to fraction form
   104,608.10/156,739.35 = 89,056.10/x
3. Step 3: Cross multiply
   104,608.10x = 156,739.35 × 89,056.10
4. Step 4: Simplify right side
   104,608.10x = 13,958,595,227.54
5. Step 5: Solve for x
   x = 13,958,595,227.54/104,608.10
6. Step 6: Final answer
   x = 133,437.04