Finding the Fourth Proportional to 223,100.43, 307,869.91 and 121,123.58

Step by Step Solution

1. Step 1: Write the proportion equation
   223,100.43 : 307,869.91 = 121,123.58 : x
2. Step 2: Convert to fraction form
   223,100.43/307,869.91 = 121,123.58/x
3. Step 3: Cross multiply
   223,100.43x = 307,869.91 × 121,123.58
4. Step 4: Simplify right side
   223,100.43x = 37,290,305,378.52
5. Step 5: Solve for x
   x = 37,290,305,378.52/223,100.43
6. Step 6: Final answer
   x = 167,145.83