Finding the Fourth Proportional to 224,414.38, 336,330.72 and 91,139.81

Step by Step Solution

1. Step 1: Write the proportion equation
   224,414.38 : 336,330.72 = 91,139.81 : x
2. Step 2: Convert to fraction form
   224,414.38/336,330.72 = 91,139.81/x
3. Step 3: Cross multiply
   224,414.38x = 336,330.72 × 91,139.81
4. Step 4: Simplify right side
   224,414.38x = 30,653,119,049.71
5. Step 5: Solve for x
   x = 30,653,119,049.71/224,414.38
6. Step 6: Final answer
   x = 136,591.60