Finding the Fourth Proportional to 147,978.06, 204,210.51 and 80,910.06

Step by Step Solution

1. Step 1: Write the proportion equation
   147,978.06 : 204,210.51 = 80,910.06 : x
2. Step 2: Convert to fraction form
   147,978.06/204,210.51 = 80,910.06/x
3. Step 3: Cross multiply
   147,978.06x = 204,210.51 × 80,910.06
4. Step 4: Simplify right side
   147,978.06x = 16,522,684,616.73
5. Step 5: Solve for x
   x = 16,522,684,616.73/147,978.06
6. Step 6: Final answer
   x = 111,656.31