Finding the Fourth Proportional to 166,763.59, 230,131.47 and 91,312.09

Step by Step Solution

1. Step 1: Write the proportion equation
   166,763.59 : 230,131.47 = 91,312.09 : x
2. Step 2: Convert to fraction form
   166,763.59/230,131.47 = 91,312.09/x
3. Step 3: Cross multiply
   166,763.59x = 230,131.47 × 91,312.09
4. Step 4: Simplify right side
   166,763.59x = 21,013,785,500.47
5. Step 5: Solve for x
   x = 21,013,785,500.47/166,763.59
6. Step 6: Final answer
   x = 126,009.43