Finding the Fourth Proportional to 81,930.02, 113,071.95 and 50,120.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,930.02 : 113,071.95 = 50,120.10 : x
2. Step 2: Convert to fraction form
   81,930.02/113,071.95 = 50,120.10/x
3. Step 3: Cross multiply
   81,930.02x = 113,071.95 × 50,120.10
4. Step 4: Simplify right side
   81,930.02x = 5,667,177,441.20
5. Step 5: Solve for x
   x = 5,667,177,441.20/81,930.02
6. Step 6: Final answer
   x = 69,170.96