Finding the Fourth Proportional to 306,978.76, 459,617.82 and 156,895.90

Step by Step Solution

1. Step 1: Write the proportion equation
   306,978.76 : 459,617.82 = 156,895.90 : x
2. Step 2: Convert to fraction form
   306,978.76/459,617.82 = 156,895.90/x
3. Step 3: Cross multiply
   306,978.76x = 459,617.82 × 156,895.90
4. Step 4: Simplify right side
   306,978.76x = 72,112,151,524.94
5. Step 5: Solve for x
   x = 72,112,151,524.94/306,978.76
6. Step 6: Final answer
   x = 234,909.25