Finding the Fourth Proportional to 222,535.60, 307,097.12 and 120,558.72

Step by Step Solution

1. Step 1: Write the proportion equation
   222,535.60 : 307,097.12 = 120,558.72 : x
2. Step 2: Convert to fraction form
   222,535.60/307,097.12 = 120,558.72/x
3. Step 3: Cross multiply
   222,535.60x = 307,097.12 × 120,558.72
4. Step 4: Simplify right side
   222,535.60x = 37,023,235,702.89
5. Step 5: Solve for x
   x = 37,023,235,702.89/222,535.60
6. Step 6: Final answer
   x = 166,369.95