Finding the Fourth Proportional to 150,978.66, 208,353.18 and 82,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,978.66 : 208,353.18 = 82,998.50 : x
2. Step 2: Convert to fraction form
   150,978.66/208,353.18 = 82,998.50/x
3. Step 3: Cross multiply
   150,978.66x = 208,353.18 × 82,998.50
4. Step 4: Simplify right side
   150,978.66x = 17,293,000,679.71
5. Step 5: Solve for x
   x = 17,293,000,679.71/150,978.66
6. Step 6: Final answer
   x = 114,539.37