Finding the Fourth Proportional to 166,978.82, 230,440.20 and 99,036.02

Step by Step Solution

1. Step 1: Write the proportion equation
   166,978.82 : 230,440.20 = 99,036.02 : x
2. Step 2: Convert to fraction form
   166,978.82/230,440.20 = 99,036.02/x
3. Step 3: Cross multiply
   166,978.82x = 230,440.20 × 99,036.02
4. Step 4: Simplify right side
   166,978.82x = 22,821,880,256.00
5. Step 5: Solve for x
   x = 22,821,880,256.00/166,978.82
6. Step 6: Final answer
   x = 136,675.30