Finding the Fourth Proportional to 216,070.69, 298,141.88 and 120,577.15

Step by Step Solution

1. Step 1: Write the proportion equation
   216,070.69 : 298,141.88 = 120,577.15 : x
2. Step 2: Convert to fraction form
   216,070.69/298,141.88 = 120,577.15/x
3. Step 3: Cross multiply
   216,070.69x = 298,141.88 × 120,577.15
4. Step 4: Simplify right side
   216,070.69x = 35,949,098,186.04
5. Step 5: Solve for x
   x = 35,949,098,186.04/216,070.69
6. Step 6: Final answer
   x = 166,376.56