Finding the Fourth Proportional to 665,014.02, 997,661.32 and 215,700.00

Step by Step Solution

1. Step 1: Write the proportion equation
   665,014.02 : 997,661.32 = 215,700.00 : x
2. Step 2: Convert to fraction form
   665,014.02/997,661.32 = 215,700.00/x
3. Step 3: Cross multiply
   665,014.02x = 997,661.32 × 215,700.00
4. Step 4: Simplify right side
   665,014.02x = 215,195,543,656.83
5. Step 5: Solve for x
   x = 215,195,543,656.83/665,014.02
6. Step 6: Final answer
   x = 323,595.50