Finding the Fourth Proportional to 104,762.10, 156,970.35 and 89,210.10

Step by Step Solution

1. Step 1: Write the proportion equation
   104,762.10 : 156,970.35 = 89,210.10 : x
2. Step 2: Convert to fraction form
   104,762.10/156,970.35 = 89,210.10/x
3. Step 3: Cross multiply
   104,762.10x = 156,970.35 × 89,210.10
4. Step 4: Simplify right side
   104,762.10x = 14,003,340,620.54
5. Step 5: Solve for x
   x = 14,003,340,620.54/104,762.10
6. Step 6: Final answer
   x = 133,668.00