Finding the Fourth Proportional to 166,498.12, 229,762.74 and 91,045

Step by Step Solution

1. Step 1: Write the proportion equation
   166,498.12 : 229,762.74 = 91,045 : x
2. Step 2: Convert to fraction form
   166,498.12/229,762.74 = 91,045/x
3. Step 3: Cross multiply
   166,498.12x = 229,762.74 × 91,045
4. Step 4: Simplify right side
   166,498.12x = 20,918,748,663.30
5. Step 5: Solve for x
   x = 20,918,748,663.30/166,498.12
6. Step 6: Final answer
   x = 125,639.55