Finding the Fourth Proportional to 123,253.62, 170,090.01 and 66,665.00

Step by Step Solution

1. Step 1: Write the proportion equation
   123,253.62 : 170,090.01 = 66,665.00 : x
2. Step 2: Convert to fraction form
   123,253.62/170,090.01 = 66,665.00/x
3. Step 3: Cross multiply
   123,253.62x = 170,090.01 × 66,665.00
4. Step 4: Simplify right side
   123,253.62x = 11,339,049,666.20
5. Step 5: Solve for x
   x = 11,339,049,666.20/123,253.62
6. Step 6: Final answer
   x = 91,997.70