Finding the Fourth Proportional to 166,739.84, 230,100.98 and 91,288.34

Step by Step Solution

1. Step 1: Write the proportion equation
   166,739.84 : 230,100.98 = 91,288.34 : x
2. Step 2: Convert to fraction form
   166,739.84/230,100.98 = 91,288.34/x
3. Step 3: Cross multiply
   166,739.84x = 230,100.98 × 91,288.34
4. Step 4: Simplify right side
   166,739.84x = 21,005,536,496.57
5. Step 5: Solve for x
   x = 21,005,536,496.57/166,739.84
6. Step 6: Final answer
   x = 125,977.91