Finding the Fourth Proportional to 221,099.46, 331,567.59 and 78,906.69

Step by Step Solution

1. Step 1: Write the proportion equation
   221,099.46 : 331,567.59 = 78,906.69 : x
2. Step 2: Convert to fraction form
   221,099.46/331,567.59 = 78,906.69/x
3. Step 3: Cross multiply
   221,099.46x = 331,567.59 × 78,906.69
4. Step 4: Simplify right side
   221,099.46x = 26,162,901,038.18
5. Step 5: Solve for x
   x = 26,162,901,038.18/221,099.46
6. Step 6: Final answer
   x = 118,330.91