Finding the Fourth Proportional to 78,978.83, 118,489.01 and 28,382.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,978.83 : 118,489.01 = 28,382.96 : x
2. Step 2: Convert to fraction form
   78,978.83/118,489.01 = 28,382.96/x
3. Step 3: Cross multiply
   78,978.83x = 118,489.01 × 28,382.96
4. Step 4: Simplify right side
   78,978.83x = 3,363,069,127.49
5. Step 5: Solve for x
   x = 3,363,069,127.49/78,978.83
6. Step 6: Final answer
   x = 42,581.91