Finding the Fourth Proportional to 110,804.16, 152,889.60 and 65,489.76

Step by Step Solution

1. Step 1: Write the proportion equation
   110,804.16 : 152,889.60 = 65,489.76 : x
2. Step 2: Convert to fraction form
   110,804.16/152,889.60 = 65,489.76/x
3. Step 3: Cross multiply
   110,804.16x = 152,889.60 × 65,489.76
4. Step 4: Simplify right side
   110,804.16x = 10,012,703,210.50
5. Step 5: Solve for x
   x = 10,012,703,210.50/110,804.16
6. Step 6: Final answer
   x = 90,363.96