Finding the Fourth Proportional to 78,013.76, 116,949.56 and 28,082.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,013.76 : 116,949.56 = 28,082.12 : x
2. Step 2: Convert to fraction form
   78,013.76/116,949.56 = 28,082.12/x
3. Step 3: Cross multiply
   78,013.76x = 116,949.56 × 28,082.12
4. Step 4: Simplify right side
   78,013.76x = 3,284,190,852.71
5. Step 5: Solve for x
   x = 3,284,190,852.71/78,013.76
6. Step 6: Final answer
   x = 42,097.59