Finding the Fourth Proportional to 465,015.06, 697,530.69 and 128,053.98

Step by Step Solution

1. Step 1: Write the proportion equation
   465,015.06 : 697,530.69 = 128,053.98 : x
2. Step 2: Convert to fraction form
   465,015.06/697,530.69 = 128,053.98/x
3. Step 3: Cross multiply
   465,015.06x = 697,530.69 × 128,053.98
4. Step 4: Simplify right side
   465,015.06x = 89,321,581,026.65
5. Step 5: Solve for x
   x = 89,321,581,026.65/465,015.06
6. Step 6: Final answer
   x = 192,083.20