Finding the Fourth Proportional to 222,061.16, 306,446.82 and 121,457

Step by Step Solution

1. Step 1: Write the proportion equation
   222,061.16 : 306,446.82 = 121,457 : x
2. Step 2: Convert to fraction form
   222,061.16/306,446.82 = 121,457/x
3. Step 3: Cross multiply
   222,061.16x = 306,446.82 × 121,457
4. Step 4: Simplify right side
   222,061.16x = 37,220,111,416.74
5. Step 5: Solve for x
   x = 37,220,111,416.74/222,061.16
6. Step 6: Final answer
   x = 167,611.98