Finding the Fourth Proportional to 166,572.02, 229,869.69 and 91,120.52

Step by Step Solution

1. Step 1: Write the proportion equation
   166,572.02 : 229,869.69 = 91,120.52 : x
2. Step 2: Convert to fraction form
   166,572.02/229,869.69 = 91,120.52/x
3. Step 3: Cross multiply
   166,572.02x = 229,869.69 × 91,120.52
4. Step 4: Simplify right side
   166,572.02x = 20,945,845,685.04
5. Step 5: Solve for x
   x = 20,945,845,685.04/166,572.02
6. Step 6: Final answer
   x = 125,746.48