Finding the Fourth Proportional to 222,061.12, 306,451.60 and 121,459.12

Step by Step Solution

1. Step 1: Write the proportion equation
   222,061.12 : 306,451.60 = 121,459.12 : x
2. Step 2: Convert to fraction form
   222,061.12/306,451.60 = 121,459.12/x
3. Step 3: Cross multiply
   222,061.12x = 306,451.60 × 121,459.12
4. Step 4: Simplify right side
   222,061.12x = 37,221,341,658.59
5. Step 5: Solve for x
   x = 37,221,341,658.59/222,061.12
6. Step 6: Final answer
   x = 167,617.55