Finding the Fourth Proportional to 166,769.06, 230,141.37 and 90,288.15

Step by Step Solution

1. Step 1: Write the proportion equation
   166,769.06 : 230,141.37 = 90,288.15 : x
2. Step 2: Convert to fraction form
   166,769.06/230,141.37 = 90,288.15/x
3. Step 3: Cross multiply
   166,769.06x = 230,141.37 × 90,288.15
4. Step 4: Simplify right side
   166,769.06x = 20,779,038,535.77
5. Step 5: Solve for x
   x = 20,779,038,535.77/166,769.06
6. Step 6: Final answer
   x = 124,597.69