Finding the Fourth Proportional to 106,099.78, 159,050.78 and 72,835.50

Step by Step Solution

1. Step 1: Write the proportion equation
   106,099.78 : 159,050.78 = 72,835.50 : x
2. Step 2: Convert to fraction form
   106,099.78/159,050.78 = 72,835.50/x
3. Step 3: Cross multiply
   106,099.78x = 159,050.78 × 72,835.50
4. Step 4: Simplify right side
   106,099.78x = 11,584,543,086.69
5. Step 5: Solve for x
   x = 11,584,543,086.69/106,099.78
6. Step 6: Final answer
   x = 109,185.36