Finding the Fourth Proportional to 224,520.26, 336,488.78 and 91,245.42

Step by Step Solution

1. Step 1: Write the proportion equation
   224,520.26 : 336,488.78 = 91,245.42 : x
2. Step 2: Convert to fraction form
   224,520.26/336,488.78 = 91,245.42/x
3. Step 3: Cross multiply
   224,520.26x = 336,488.78 × 91,245.42
4. Step 4: Simplify right side
   224,520.26x = 30,703,060,284.50
5. Step 5: Solve for x
   x = 30,703,060,284.50/224,520.26
6. Step 6: Final answer
   x = 136,749.62